Number of permutations of 7 copies of 1..n with all adjacent differences <= 3 in absolute value.
A177309
Number of permutations of 7 copies of 1..n with all adjacent differences <= 3 in absolute value.
Terms
- a(0) =1a(1) =1a(2) =3432a(3) =399072960
External references
- oeis: A177309