Fred Kline

Seattle, WA

Age: 70

Contact: rudytoody.AT.comcast.DOT.net

I retired in 2006 and bought Mathematica and a stack of math books with the goal to teach myself to become a world-class mathematician. I am on pace to achieve that goal sometime shortly after the next Ice Age.

I consider myself a Mathematical Mutt (no papers) who occasionally ventures off the back porch to play in the yard with the big dogs.

I donate regularly to the The OEIS Foundation.

When I look at the patterns, I can hear the wheels turning. When I look at the math, I find out the hamsters have died.

Aug
21
awarded Good Question
Aug
18
accepted Using a variable for two different purposes
Aug
16
revised Identities for Sieve of Eratosthenes collisions.
tweaked notation for final time
Aug
15
revised Identities for Sieve of Eratosthenes collisions.
removed bounty references
Aug
15
revised Identities for Sieve of Eratosthenes collisions.
bumped to try to get an answer before the bounty expires
Aug
14
revised Identities for Sieve of Eratosthenes collisions.
begging for an answer
Aug
13
comment How to make a stereogram in Mathematica? (2)
I see pyramid on left, pyramid hole on right. I don't see a triangle.
Aug
12
revised Identities for Sieve of Eratosthenes collisions.
fixed one more exp
Aug
12
revised Identities for Sieve of Eratosthenes collisions.
changed e^ to exp()
Aug
11
awarded Notable Question
Aug
11
revised $\prod_{n=1}^{\infty} n^{\mu(n)}=\frac{1}{4 \pi ^2}$
added note that the bug has been corrected in Mathematica V.10
Aug
10
comment Palindromic Patterns of Greatest Divisors $\leq k$
@PerAlexandersson, math.stackexchange.com/q/886041/28555 shows another identity (conjecture) based on the same palindromic divisor sequence.
Aug
10
comment Palindromic Patterns of Greatest Divisors $\leq k$
@PerAlexandersson, math.stackexchange.com/q/867135/28555 points to a post that explains how I found it. mathematica.stackexchange.com/q/48452/973 points to the Mathematica code for the recursive routine.
Aug
10
comment Palindromic Patterns of Greatest Divisors $\leq k$
Actually, it is not a counter-example. See modified OP. $2193$ is a multiple of 17, inside the 17-seg which shows it is a derangement.
Aug
10
revised Palindromic Patterns of Greatest Divisors $\leq k$
added one assumption to constructing the sequence and examining sub-sequences.
Aug
10
revised Identities for Sieve of Eratosthenes collisions.
replaced \textbf with \mathbb
Aug
7
revised Identities for Sieve of Eratosthenes collisions.
added k to elements of N in identities
Aug
7
revised Identities for Sieve of Eratosthenes collisions.
Changed notation for the number of elements in the set
Aug
6
revised Identities for Sieve of Eratosthenes collisions.
mathematically defined last two tables
Aug
5
revised Identities for Sieve of Eratosthenes collisions.
improved a question and one comment.
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