A160482 - OEIS

%I #4 Jun 02 2025 01:40:55

%S 1,36,2063,182474,23364725,4107797216,951631193979,281268377936406,

%T 103364179496231841,46249298048633298156,24761883016575811181799,

%U 15633887186628672922202850,11496293145747030133211784525

%N Second left hand column of the Beta triangle A160480.

%p 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 A160480 is the Beta triangle.

%Y A101269 is the first left hand column.

%K easy,nonn

%O 3,2

%A _Johannes W. Meijer_, May 24 2009