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A056531
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Sequence remaining after fourth round of Flavius Josephus sieve; remove every fifth term of A056530.
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3
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1, 3, 7, 13, 19, 25, 27, 31, 39, 43, 49, 51, 61, 63, 67, 73, 79, 85, 87, 91, 99, 103, 109, 111, 121, 123, 127, 133, 139, 145, 147, 151, 159, 163, 169, 171, 181, 183, 187, 193, 199, 205, 207, 211, 219, 223, 229, 231, 241, 243, 247, 253, 259, 265, 267, 271, 279
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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COMMENTS
| Numbers {1, 3, 7, 13, 19, 25, 27, 31, 39, 43, 49, 51} mod 60
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CROSSREFS
| Compare A000027 for 0 rounds of sieve, A005408 after 1 round of sieve, A047241 after 2 rounds, A056530 after 3 rounds, A056531 after 4 rounds, A000960 after all rounds.
After n rounds the remaining sequence comprises A002944(n) numbers mod A003418(n+1), i.e. 1/(n+1) of them.
Sequence in context: A113911 A051635 A136009 * A144917 A102828 A117679
Adjacent sequences: A056528 A056529 A056530 * A056532 A056533 A056534
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KEYWORD
| easy,nonn
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AUTHOR
| Henry Bottomley (se16(AT)btinternet.com), Jun 19 2000
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