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A151595
Number of permutations of 3 indistinguishable copies of 1..n arranged in a circle with exactly 7 adjacent element pairs in decreasing order.
0
0, 15048, 53145540, 33478094610, 9810742830462, 1894605563973312
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OFFSET
3,2
LINKS
Table of n, a(n) for n=3..8.
CROSSREFS
Sequence in context:
A295453
A205022
A207297
*
A254581
A254588
A254356
Adjacent sequences:
A151592
A151593
A151594
*
A151596
A151597
A151598
KEYWORD
nonn
AUTHOR
R. H. Hardin
May 21 2009
STATUS
approved
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Last modified August 22 12:59 EDT 2024. Contains 375369 sequences. (Running on oeis4.)