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Search: id:A061834
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| 0, 0, 2, 12, 60, 340, 2310, 18354, 165592, 1664424, 18410130, 222085270, 2901011124, 40790592492, 614247917374, 9862468172970, 168192316357680, 3036117383306704, 57835808554908042, 1159445925005561694, 24400842327684259660, 537878773763482265940
(list; graph; listen)
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OFFSET
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0,3
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REFERENCES
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See A003422 for !n.
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LINKS
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Harry J. Smith, Table of n, a(n) for n=0,...,200
Index entries for sequences related to final digits of numbers
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PROGRAM
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(PARI) { f=1; L=0; for (n=0, 200, if (n, L+=f; f*=n); write("b061834.txt", n, " ", L*binomial(n, 2)) ) } [From Harry J. Smith (hjsmithh(AT)sbcglobal.net), Jul 28 2009]
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CROSSREFS
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Sequence in context: A001574 A074445 A038154 this_sequence A145630 A082688 A099996
Adjacent sequences: A061831 A061832 A061833 this_sequence A061835 A061836 A061837
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KEYWORD
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nonn
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com), Nov 10 2001
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