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 A171164 #2 Mar 30 2012 17:34:03 %S A171164 0,1,2,3,4,8,12,13,14,16,18,21,24,31,38,39,40,42,44,47,50,54,58,63,68, %T A171164 78,88,89,90,92,94,97,100,104,108,113,118,124,130,137,144,157,170,171, %U A171164 172,174,176,179,182,186,190,195,200,206,212 %N A171164 A polyspiral path: a(n) represents the n-th vertex of a lattice path with an infinite number of finite square spirals. %C A171164 Note that the vertex 0 and the vertex 4 both are overlapping. %C A171164 For other versions see A171165 and A171166. %C A171164 Also, partial sums of the sequence formed by 0 together with the numbers of A171172 repeated. %Y A171164 Cf. A171165, A171166, A171172, A171173, A171174, A171175, A171176, A171177, A171178. %K A171164 easy,nonn %O A171164 0,3 %A A171164 _Omar E. Pol_, Mar 14 2010