a(n)= A000129(n)*A000129(2*n) where A000129(n) are the Pell numbers.

A043699

a(n)= A000129(n)*A000129(2*n) where A000129(n) are the Pell numbers.

Terms

    a(0) =0a(1) =2a(2) =24a(3) =350a(4) =4896a(5) =68962a(6) =970200a(7) =13652158a(8) =192099456a(9) =2703046850a(10) =38034749784a(11) =535189557278

External references