OFFSET
0,3
FORMULA
D-finite with recurrence (n+2)^2*(n-1)^2*a(n) -4*n^2*(2*n-1)^2*a(n-1)=0. - R. J. Mathar, Dec 11 2020
a(n) = A213600(2n,2) for n>=1. - Alois P. Heinz, Oct 07 2022
MAPLE
A338727 := proc(n)
if n = 0 then
1;
else
end if;
end proc:
seq( A338727(n), n=0..30) ; # R. J. Mathar, Dec 11 2020
CROSSREFS
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Nov 30 2020
STATUS
approved