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A177328 Number of permutations of n copies of 1..7 with all adjacent differences <= 3 in absolute value. 1
1, 428, 6068622, 171548183912, 6595449547140990, 302061042944500510428, 15490059482899736687180550 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..6.

CROSSREFS

Sequence in context: A173798 A233812 A231047 * A243833 A320712 A203612

Adjacent sequences:  A177325 A177326 A177327 * A177329 A177330 A177331

KEYWORD

nonn

AUTHOR

R. H. Hardin, May 06 2010

EXTENSIONS

a(0) and a(6) from Alois P. Heinz, Jan 20 2020

STATUS

approved

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Last modified April 5 19:11 EDT 2020. Contains 333257 sequences. (Running on oeis4.)