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 A342271 #11 Mar 11 2021 23:52:17 %S A342271 1,2,2,2,4,6,4,2,4,8,10,8,10,14,8,2,4,8,10,10,14,22,22,12,10,20,28,24, %T A342271 26,32,16,2,4,8,10,10,14,22,22,14,14,26,38,38,38,50,46,20,10,20,28,30, %U A342271 38,58,66,44,30,48,70,64,64,70,32,2,4,8 %N A342271 A161645(n)/3. %D A342271 S. Ulam, On some mathematical problems connected with patterns of growth of figures, pp. 215-224 of R. E. Bellman, ed., Mathematical Problems in the Biological Sciences, Proc. Sympos. Applied Math., Vol. 14, Amer. Math. Soc., 1962. See Example 3. %Y A342271 Cf. A161644, A161645, A182634, A139250. %K A342271 nonn %O A342271 2,2 %A A342271 _N. J. A. Sloane_, Mar 11 2021