Number of derangements of a multiset comprising n repeats of a 4-element set.

A371252

Number of derangements of a multiset comprising n repeats of a 4-element set.

Terms

    a(0) =1a(1) =9a(2) =297a(3) =13833a(4) =748521a(5) =44127009a(6) =2750141241a(7) =178218782793

External references