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Search: id:A135996
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| A135996 |
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Difference between 2^n and the largest factorial <= 2^n. |
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+0
2
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| 0, 0, 2, 2, 10, 8, 40, 8, 136, 392, 304, 1328, 3376, 3152, 11344, 27728, 25216, 90752, 221824, 161408, 685696, 1734272, 565504, 4759808, 13148416, 29925632, 27192064, 94300928, 228518656, 57869312, 594740224, 1668482048, 3815965696, 2362913792
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OFFSET
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0,3
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FORMULA
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a(n)= 2^n-A048764(2^n). - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Mar 16 2008
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EXAMPLE
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a(6)= 2^6 - 4! = 40
a(7)= 2^7 - 5! = 8
a(8)= 2^8 - 5! = 136
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MAPLE
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A048764 := proc(n) local a; for a from 1 do if a! > n then RETURN((a-1)!); fi ; od: end: A135996 := proc(n) 2^n-A048764(2^n) ; end: seq(A135996(n), n=0..60) ; - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Mar 16 2008
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CROSSREFS
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Cf. A000142.
Sequence in context: A127058 A094359 A129898 this_sequence A141610 A019241 A032005
Adjacent sequences: A135993 A135994 A135995 this_sequence A135997 A135998 A135999
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KEYWORD
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easy,nonn
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AUTHOR
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Ctibor O. Zizka (ctibor.zizka(AT)seznam.cz), Mar 03 2008, Mar 16 2008
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EXTENSIONS
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More terms from R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Mar 16 2008
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