OFFSET
0,2
FORMULA
a(n) = (2^(3*n)*Gamma(2*n + 1/2))/(sqrt(Pi)*Gamma(n + 1)).
a(n) = A359760(4*n, 2*n), the central terms of the triangle without the zeros.
D-finite with recurrence n*a(n) -2*(4*n-1)*(4*n-3)*a(n-1)=0. - R. J. Mathar, Jan 25 2023
MAPLE
a := binomial(4*n, 2*n)*(2*n)!/(2^n*n!):
seq(a(n), n = 0..15);
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Peter Luschny, Jan 14 2023
STATUS
approved