291
reputation
1
8

## user3195446 Loading… StackExchange.ready( function () { $.get("/users/rank?userId=10069", function (data) {$(".js-ranked-loading-spinner").remove(); if (data && data.indexOf("unranked") == -1) { // if data returned and is not unranked $(".js-rank-badge").html(data).removeClass('d-none'); } }); }); I'm really into sports databases - especially baseball and futbol (Soccer in the U.S.). I started looking at math in my late 30's ! I consider myself an ok(-ish) amateur mathematician with more curiosity than my skills can manage. I am completely fascinated with Wolfram Alpha. I am also a National Team Coach for the United States Olympic & Paralympic Committee (USOPC) and so Team USA. I have a few sequences in Sloan's database: A293462: Let$A_n$be a square$n\times n$matrix with entries$a_{ij}=1$if$i+j$is a perfect power and$a_{ij}=0$otherwise. Then A293462 counts the$1$'s in$A_n.$It has been conjectured this sequence increases monotonically. A292918: Let$A_n$be a square$n\times n$matrix with entries$a_{ij}=1$if$i+j$is a prime number and$a_{ij}=0$otherwise. Then A292918 counts the$1$'s in$A_n.$A323551 and A323552; which are the numerators and denominators of the partial product representation of$\frac{\pi}{4}.$In particular$\prod\limits_{p\leq n}\frac{1}{1-(-1)^{(p-1)/2}p^{-1}}=\frac{A323551}{A323552}\$

0
7
questions
~4k
people reached
• Washington, District of Columbia, United States
• Member for 4 years, 8 months
• 9 profile views
• Last seen Apr 18 at 3:00

Score 0
Posts 5
Posts % 71
Score 0
Posts 2
Score 0
Posts 1
Score 0
Posts 1
Score 0
Posts 1
Score 0
Posts 1

1

8