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A225968
Number of permutations of [n] having exactly 7 strong fixed blocks.
2
1, 25, 375, 4439, 46240, 449376, 4226604, 39474916, 373382588, 3635491860, 36957484104, 397181210056, 4560293779650, 56383382731802, 754184534296262, 10926207562498862, 171119131459887864, 2885501334257214456, 52124282589435604908, 1003403354618592544692
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OFFSET
19,2
COMMENTS
See A186373 for the definition of strong fixed blocks.
LINKS
Alois P. Heinz, Table of n, a(n) for n = 19..460
FORMULA
a(n) ~ 6 * n! / n^17. - Vaclav Kotesovec, Aug 29 2014
CROSSREFS
Column k=7 of A186373.
Sequence in context: A254376 A022749 A036071 * A094190 A069396 A228216
Adjacent sequences: A225965 A225966 A225967 * A225969 A225970 A225971
KEYWORD
nonn
AUTHOR
Alois P. Heinz, May 22 2013
STATUS
approved

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Last modified September 28 05:35 EDT 2024. Contains 376274 sequences.
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