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 A296347 #7 Dec 17 2017 10:18:15 %S A296347 0,1,3,6,12,8,10,17,14,23,18,26,31,24,25,29,30,40,36,37,38,39,41,59, %T A296347 46,66,47,48,52,54,56,73,61,84,86,63,68,75,95,69,72,74,77,80,82,85,90, %U A296347 93,116,94,109,102,100,107,99,132,103,106,113,110,114,115,117 %N A296347 Numbers in cells in spiral A274820 on spoke through center with slope 240 degrees. %C A296347 It is conjectured that this and A296344 together are a permutation of the nonnegative numbers. %H A296347 Rémy Sigrist, <a href="/A296347/b296347.txt">Table of n, a(n) for n = 0..2500</a> %H A296347 Rémy Sigrist, <a href="/A296347/a296347.gp.txt">PARI program for A296347</a> %o A296347 (PARI) See Links section. %Y A296347 Cf. A274820, A296343, A296344, A296345, A296346, A296348. %K A296347 nonn %O A296347 0,3 %A A296347 _N. J. A. Sloane_, Dec 16 2017 %E A296347 More terms from _Rémy Sigrist_, Dec 17 2017