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Search: id:A084351
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| A084351 |
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Length of period of sequences r(k,n)=floor(sin(1)*k!)-n*floor(sin(1)*k!/n) when n is fixed. |
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+0
3
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| 1, 4, 12, 4, 20, 12, 28, 8, 36, 20, 44, 12, 52, 28, 60, 16, 68, 36, 76, 20, 84, 44, 92, 24, 100, 52, 108, 28, 116, 60, 124, 32, 132, 68, 140, 36, 148, 76, 156, 40, 164, 84, 172, 44, 180, 92, 188, 48, 196, 100, 204, 52, 212, 108, 220, 56, 228, 116, 236, 60, 244, 124, 252
(list; graph; listen)
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OFFSET
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1,2
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FORMULA
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For n>1 a(n)=n if n==0 (mod 4), a(n)=2n is n==0 (mod 2) and n is not divisible by 4, a(n)=4n if n is odd.
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PROGRAM
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(PARI) a(n)=if(n<2, 1, if(n%2-1, if(n%4, 2*n, n), 4*n))
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CROSSREFS
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Cf. A084348.
Sequence in context: A016487 A104063 A010296 this_sequence A133517 A145046 A084415
Adjacent sequences: A084348 A084349 A084350 this_sequence A084352 A084353 A084354
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KEYWORD
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nonn
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AUTHOR
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Benoit Cloitre (benoit7848c(AT)orange.fr), Jun 22 2003
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