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 A160429 #9 Mar 15 2020 02:26:05 %S A160429 8,56,56,392,56,392,392,2744,56,392,392,2744,392,2744,2744,19208,56, %T A160429 392,392,2744,392,2744,2744,19208,392,2744,2744,19208,2744,19208, %U A160429 19208,134456,56,392,392,2744,392,2744,2744,19208,392,2744,2744,19208,2744,19208,19208 %N A160429 First differences of A160428. %F A160429 a(n) = 8 * 7^A000120(n-1) for n>=1. %o A160429 (PARI) a(n) = 8*7^hammingweight(n-1); \\ _Jinyuan Wang_, Mar 14 2020 %Y A160429 Cf. A160411, A160428. %K A160429 nonn %O A160429 1,1 %A A160429 _Omar E. Pol_, Jun 01 2009 %E A160429 Formula and more terms from _Nathaniel Johnston_, Nov 14 2010 %E A160429 More terms from _Jinyuan Wang_, Mar 14 2020