Number of permutations of n copies of 1..5 introduced in order 1..5 with no element equal to another within a distance of 2.

A190921

Number of permutations of n copies of 1..5 introduced in order 1..5 with no element equal to another within a distance of 2.

Terms

    a(0) =1a(1) =99a(2) =12721a(3) =1903102a(4) =312841383a(5) =54811120355

External references