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A225968
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Number of permutations of [n] having exactly 7 strong fixed blocks.
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2
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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
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19,2
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COMMENTS
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See A186373 for the definition of strong fixed blocks.
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LINKS
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FORMULA
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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