Second diagonal (or column) of A144630.

A144631

Second diagonal (or column) of A144630.

Terms

    a(0) =4a(1) =12a(2) =880a(3) =46900a(4) =1615824a(5) =45094896a(6) =1115345088a(7) =25519125060a(8) =553014576400

External references