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Search: id:A002776
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| A002776 |
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Terms in certain determinants.
(Formerly M3972 N1642)
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+0
2
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| 1, 5, 34, 258, 2136, 19320, 190800, 2051280, 23909760, 300827520, 4067884800, 58877280000, 908666035200, 14901260774400, 258832346572800, 4748165630208000, 91746433658880000, 1862735060938752000
(list; graph; listen)
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OFFSET
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0,2
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REFERENCES
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N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).
J. D. H. Dickson, Discussion of two double series arising from the number of terms in determinants of certain forms, Proc. London Math. Soc., 10 (1879), 120-122.
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FORMULA
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a(n)=(n^3+n^2+2*n+1)*n!
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CROSSREFS
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Cf. A047922.
Sequence in context: A080503 A078284 A083987 this_sequence A081342 A058248 A116435
Adjacent sequences: A002773 A002774 A002775 this_sequence A002777 A002778 A002779
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KEYWORD
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nonn,easy,nice
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com).
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EXTENSIONS
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Edited by Dean Hickerson (dean.hickerson(AT)yahoo.com), Sep 20 2002
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