Number of permutations of 7 copies of 1..n with all adjacent differences <= 2 in absolute value.
A177308
Number of permutations of 7 copies of 1..n with all adjacent differences <= 2 in absolute value.
Terms
- a(0) =1a(1) =1a(2) =3432a(3) =399072960
External references
- oeis: A177308