Number of permutations of n copies of 1..7 introduced in order 1..7 with no element equal to another within a distance of 4.

A190930

Number of permutations of n copies of 1..7 introduced in order 1..7 with no element equal to another within a distance of 4.

Terms

    a(0) =1a(1) =876a(2) =930776a(3) =1121366420

External references