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 A014782 #9 Jul 08 2025 05:41:50 %S A014782 1,1,1,3,5,3,17,31,25,31,17,155,293,259,349,259,293,155,2073,3991, %T A014782 3681,5151,4289,5151,3681,3991,2073,38227,74381,70235,100325,88507, %U A014782 109765,88507,100325,70235,74381,38227,929569,1820911,1744457,2523191,2302121 %N A014782 Triangle of numbers associated with Genocchi numbers. %H A014782 G. Kreweras, <a href="https://doi.org/10.1006/eujc.1995.0081">Sur les permutations comptées par les nombres de Genocchi de 1-ière et 2-ième espèce</a>, Europ. J. Comb., vol. 18, pp. 49-58, 1997. %K A014782 tabl,nonn %O A014782 1,4 %A A014782 _N. J. A. Sloane_ %E A014782 More terms from Antonio G. Astudillo (afg_astudillo(AT)lycos.com), Mar 22 2003