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A001346
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Sum (n+k)! C(4,k), k = 0 . . 4.
(Formerly M5134)
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1
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23, 65, 261, 1370, 8742, 65304, 557400, 5343120, 56775600, 661933440, 8397406080, 115123680000, 1695705580800, 26701944192000, 447579574041600, 7955978033203200, 149473718634240000
(list; graph; refs; listen; history; internal format)
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OFFSET
| -1,1
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REFERENCES
| Biondi, E.; Divieti, L.; Guardabassi, G.; Counting paths, circuits, chains and cycles in graphs: A unified approach. Canad. J. Math. 22 1970 22-35.
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
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CROSSREFS
| Sequence in context: A067194 A107692 A089823 * A051875 A125872 A104945
Adjacent sequences: A001343 A001344 A001345 * A001347 A001348 A001349
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KEYWORD
| nonn
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
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