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 A160482 #4 Jun 02 2025 01:40:55 %S A160482 1,36,2063,182474,23364725,4107797216,951631193979,281268377936406, %T A160482 103364179496231841,46249298048633298156,24761883016575811181799, %U A160482 15633887186628672922202850,11496293145747030133211784525 %N A160482 Second left hand column of the Beta triangle A160480. %p A160482 nmax:=15; a(1,1):=0: for n from 2 to nmax do a(n,1):=(2*n-3)^2*a(n-1,1)-(2*(n-2))! od: a(2,2):=0: for n from 3 to nmax do a(n,2):=(2*n-3)^2*a(n-1,2)-a(n-1,1) od: seq(a(n,2), n=3..nmax); %Y A160482 A160480 is the Beta triangle. %Y A160482 A101269 is the first left hand column. %K A160482 easy,nonn %O A160482 3,2 %A A160482 _Johannes W. Meijer_, May 24 2009