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1, 2, 4, 9, 28, 125, 726, 5047, 40328, 362889, 3628810, 39916811, 479001612, 6227020813, 87178291214, 1307674368015, 20922789888016, 355687428096017, 6402373705728018, 121645100408832019
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graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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0,2
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COMMENTS
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Every infinite, increasing, integer arithmetic progression meets this sequence infinitely often. - John Abbott (abbott(AT)dima.unige.it), Mar 06 2003
SUM(A010051(k): A038507(n) < k <= a(n)) = 0. [From Reinhard Zumkeller, Jul 10 2009]
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LINKS
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Table of n, a(n) for n=0..19.
Index entries for sequences related to factorial numbers
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FORMULA
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E.g.f.: x*exp(x) + 1/(1-x). - Len Smiley (smiley(AT)math.uaa.alaska.edu), Dec 05 2001
Row sums of triangle A135723 - Gary W. Adamson, Nov 25 2007
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MATHEMATICA
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lst={}; Do[AppendTo[lst, n!+n], {n, 3*4!}]; lst [From Vladimir Joseph Stephan Orlovsky, Nov 20 2008]
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PROG
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(Maxima) A005095(n):= n!+n$
makelist(A005095(n), n, 0, 30); /* Martin Ettl, Nov 03 2012 */
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CROSSREFS
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Cf. A135723.
A090786. [From Reinhard Zumkeller, Jul 10 2009]
Sequence in context: A003320 A007876 A176068 * A208965 A214935 A092329
Adjacent sequences: A005092 A005093 A005094 * A005096 A005097 A005098
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KEYWORD
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nonn
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AUTHOR
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N. J. A. Sloane.
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STATUS
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approved
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