Number of permutations of 7 copies of 1..n introduced in order 1..n with no element equal to another within a distance of 1.
A190836
Number of permutations of 7 copies of 1..n introduced in order 1..n with no element equal to another within a distance of 1.
Terms
- a(0) =1a(1) =0a(2) =1a(3) =56620a(4) =22875971289
External references
- oeis: A190836