1234948

Appears in sequences

• Triangle of central factorial numbers |4^k t(2n+1,2n+1-2k)| read by rows (n>=0, k=0..n).at n=24A008956
• Triangle T(n,k) defined by the generating function cosh(sqrt(y)*arcsin(x)) + sqrt(y)*sinh(sqrt(y)*arcsin(x)) - 1 = Sum_{n>=1} Sum_{k=1..n} T(n,k)*y^k *x^n/n!.at n=45A091885
• Table of the number of (n,k)-Riordan complexes, read by rows.at n=24A160563
• Third column (negated) of triangle in A182971.at n=10A184878
• a(n) = [x^n] Product_{k=1..2*n} (x + (2*k-1)^2).at n=3A346543