This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A285304 #30 Dec 09 2017 19:25:09 %S A285304 1,2,3,4,5,7,11,13,16,17,19,22,23,25,27,29,31,32,34,37,41,43,46,47,49, %T A285304 52,53,55,57,59,61,64,67,71,73,74,79,81,82,83,85,88,89,92,94,97,101, %U A285304 103,106,107,109,113,115,117,119,121,125,127,131,134,136,137,139,141,142,145,149,151,157,158,163,167,169,171,173,175,178,179,181,185,187,189,190,191,193,194,196,197,199 %N A285304 P-positions in the sum-from-product game. %C A285304 The sum-from-product game is played by two players alternating moves. Given a positive integer n, a player can choose any two integers a and b, such that ab = n. The player subtracts a + b from n, given that the result is nonnegative. That is, the next player starts with a new number n - a - b. A player without a move loses. %C A285304 Prime numbers are P-positions. %C A285304 N-positions are A285847. %H A285304 Pratik Alladi, Neel Bhalla, Tanya Khovanova, Nathan Sheffield, Eddie Song, William Sun, Andrew The, Alan Wang, Naor Wiesel, Kevin Zhang Kevin Zhao, <a href="https://arxiv.org/abs/1707.07201">PRIMES STEP Plays Games</a>, arXiv:1707.07201 [math.CO], 2017, Section 6. %Y A285304 Cf. A285847. %K A285304 nonn %O A285304 1,2 %A A285304 _Tanya Khovanova_ and students, May 06 2017