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 A163765 #7 Jun 02 2025 01:48:46 %S A163765 1,6,18,48,131,363,1017,2873,8169,23349,67024,193086,557949,1616501, %T A163765 4694034,13657896,39809649,116218701,339762942,994553160,2914608177, %U A163765 8550424953,25107964077,73793368593,217057617567,638936722403,1882096946232,5547613247418 %N A163765 Inverse binomial transform of A048775 (assuming offset zero in both sequences). %F A163765 A007318^(-1) * A048775, where A048775 = (1, 7, 31, 121, 456, 1709,...). %e A163765 a(4) = 48 = (-1, 3, -3, 1) dot (1, 7, 31, 121). %Y A163765 A048775 %K A163765 nonn %O A163765 1,2 %A A163765 _Gary W. Adamson_, Aug 03 2009