A190947 Number of permutations of the n*(n+1)/2 numbers (i copies of i | i=1..n), with no element equal to another within a distance of 3

1, 0, 0, 0, 0, 13002, 11471355944, 101716608710405424, 18726065054096898027414348, 96678228204760902484487394741989088

Offset

1,6

Links

Table of n, a(n) for n=1..10.

Crossrefs

Sequence in context: A028385 A335742 A238142 * A203910 A354510 A138762

Adjacent sequences: A190944 A190945 A190946 * A190948 A190949 A190950

Keyword

nonn

Author

R. H. Hardin May 24 2011

Status

approved