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 A077663 #9 Jan 10 2025 20:35:22 %S A077663 1,6,18,20,75,32,196,72,135,92,726,117,1183,184,258,272,2601,257,3610, %T A077663 351,541,464,6348,450,1625,652,1134,712,12615,632,15376,1056,1427, %U A077663 1124,2007,999,26011,1408,2032,1367,35301,1261,40678,1816,2219,2072,53016,1764 %N A077663 Sum of terms of n-th row of A077661. %C A077663 a(p) = p^2*(p+1)/2. %C A077663 a(2^n) = n*(n+1). %Y A077663 Cf. A077661, A077662. %K A077663 nonn %O A077663 1,2 %A A077663 _Amarnath Murthy_, Nov 14 2002 %E A077663 More terms from _Sascha Kurz_, Jan 27 2003