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, 15048, 53145540, 33478094610, 9810742830462, 1894605563973312

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