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A019515
a(n) = 1 + 0!*1!*2!*...*n!.
6
2, 2, 3, 13, 289, 34561, 24883201, 125411328001, 5056584744960001, 1834933472251084800001, 6658606584104736522240000001, 265790267296391946810949632000000001
OFFSET
0,1
REFERENCES
M. Le, On the Interesting Smarandache Product Sequences, Smarandache Notions Journal, Vol. 9, No. 1-2, 1998, 133-134.
F. Iacobescu, Smarandache Partition Type and Other Sequences, Bull. Pure Appl. Sciences, Vol. 16E, No. 2 (1997), pp. 237-240.
LINKS
F. Smarandache, Collected Papers, Vol. II, Vol. II, Tempus Publ. Hse., Bucharest, Romania, 1996.
Eric Weisstein's World of Mathematics, Smarandache Sequences
FORMULA
a(n) = A000178(n) + 1.
MATHEMATICA
FoldList[Times, 1, Range[12]!]+1 (* Harvey P. Dale, Dec 11 2012 *)
CROSSREFS
Cf. A000178.
Sequence in context: A100362 A062439 A139521 * A094352 A073828 A338523
KEYWORD
nonn,easy
AUTHOR
R. Muller
EXTENSIONS
Name corrected by Arkadiusz Wesolowski, Oct 03 2011
STATUS
approved