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A177315 Number of permutations of 9 copies of 1..n with all adjacent differences <= 3 in absolute value. 0
1, 1, 48620, 227873431500, 21452752266265320000, 230729955958244519983206000 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,3
COMMENTS
a(n) = (9n)!/362880^n for n<=4.
LINKS
CROSSREFS
Cf. A172613.
Sequence in context: A140924 A351488 A177314 * A172613 A172554 A244172
KEYWORD
nonn
AUTHOR
R. H. Hardin, May 06 2010
STATUS
approved

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Last modified March 4 05:23 EST 2024. Contains 370522 sequences. (Running on oeis4.)