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Search: id:A154655
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| A154655 |
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Number of permutations of length n within distance 6 |
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+0
2
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| 1, 2, 6, 24, 120, 720, 5040, 30960, 172200, 899064, 4553166, 22934774, 116914351, 610093513, 3222826972, 17101449940, 90706002192, 479654768640, 2527274267136, 13280313508416, 69734129749632, 366283822765632
(list; graph; listen)
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OFFSET
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1,2
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LINKS
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Torleiv Klove, Spheres of Permutations under the Infinity Norm - Permutations with limited displacement. Reports in Informatics, Department of Informatics, University of Bergen, Norway, no. 376, November 2008.
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FORMULA
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G.f is a rational function f(x)/g(x) where f has degree 482 and g has degree 494.
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CROSSREFS
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Cf. A000045, A002524, A002526, A072856, A154654
Sequence in context: A033645 A138113 A045977 this_sequence A152369 A152387 A152383
Adjacent sequences: A154652 A154653 A154654 this_sequence A154656 A154657 A154658
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KEYWORD
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nonn
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AUTHOR
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Torleiv Klove (Torleiv.Klove(AT)ii.uib.no), Jan 13 2009
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