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2, 3, 6, 8, 12, 15, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 84, 90, 105, 112, 120, 126, 140, 144, 168, 180, 210, 224, 240, 252, 280, 288, 315, 320, 336, 360, 384, 420, 448, 480, 504, 560, 576, 630, 640, 648, 672, 720, 756, 810, 840, 864, 896, 945, 960, 1008, 1080
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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COMMENTS
| It is conjectured that n^2 < S(n)! for almost all n.
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REFERENCES
| J. Sondow, A geometric proof that e is irrational and a new measure of its irrationality, Amer. Math. Monthly 113 (2006) 637-641.
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LINKS
| Index entries for sequences related to factorial numbers.
J. Sondow, A geometric proof that e is irrational and a new measure of its irrationality
Eric Weisstein's World of Mathematics, Smarandache Function
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EXAMPLE
| 15^2 = 225 > 120 = 5! = S(15)!, so 15 is a member.
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CROSSREFS
| Cf. A000290, A002034, A057109, A092495, A122379, A122380.
Sequence in context: A131723 A198442 A035106 * A181687 A194881 A111242
Adjacent sequences: A122375 A122376 A122377 * A122379 A122380 A122381
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KEYWORD
| nonn
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AUTHOR
| Jonathan Sondow (jsondow(AT)alumni.princeton.edu), Sep 03 2006
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