%I #7 Jul 04 2023 13:06:39
%S 1,5,55,485,4380,39570,421800,4265100,49455000,594001800,7784683200,
%T 107814672000,1624964544000,25881953328000,443107288512000,
%U 8028628336512000,154539996629760000,3135393617489280000,67045955961922560000,1503619681171829760000,35321502985569884160000
%N Third column (m=3) of triangle A144891 (S1hat(5)).
%F a(n) = A144891(n+3,3), n>=0.
%Y Cf. A144891, A001720 (first column), A144893 (second column).
%K nonn,easy
%O 0,2
%A _Wolfdieter Lang_, Oct 09 2008