359530

Appears in sequences

• a(n) = Sum_{k=0..2n-2} T(n,k) * T(n,k+2), with T given by A026552.at n=6A027274
• a(n) = Sum_{k=0..m-2} T(n,k) * T(n,k+2), where m=n for n=0,1,2,3; m=2n for n >= 4; and T is given by A026082.at n=6A027317