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A177303
Number of permutations of 5 copies of 1..n with all adjacent differences <= 3 in absolute value.
0
1, 1, 252, 756756, 11732745024, 52977847995072, 131319696504676680, 302061042944500510428, 847432462636241316703042
OFFSET
0,3
COMMENTS
a(n) = (5n)!/120^n for n<=4.
CROSSREFS
Cf. A014609.
Sequence in context: A203062 A259452 A177302 * A014609 A172557 A068275
KEYWORD
nonn
AUTHOR
R. H. Hardin, May 06 2010
EXTENSIONS
a(0), a(8) from Alois P. Heinz, Jan 19 2016
STATUS
approved