Number of ways to shuffle a deck of 4n cards, with 4 cards in each of n ranks, so that adjacent cards have different ranks.

A330266

Number of ways to shuffle a deck of 4n cards, with 4 cards in each of n ranks, so that adjacent cards have different ranks.

Terms

    a(0) =1a(1) =0a(2) =1152a(3) =15095808a(4) =751480602624

External references