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A107323
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If n-th prime is 6m-1, then a(n) = 6m+1. If n-th prime is 6m+1, then a(n) = 6m-1.
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4
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7, 5, 13, 11, 19, 17, 25, 31, 29, 35, 43, 41, 49, 55, 61, 59, 65, 73, 71, 77, 85, 91, 95, 103, 101, 109, 107, 115, 125, 133, 139, 137, 151, 149, 155, 161, 169, 175, 181, 179, 193, 191, 199, 197, 209, 221, 229, 227, 235, 241, 239, 253, 259, 265, 271, 269, 275, 283
(list; graph; refs; listen; history; internal format)
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OFFSET
| 3,1
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MAPLE
| a:=proc(n) if ithprime(n) mod 6 = 5 then ithprime(n)+2 elif ithprime(n) mod 6 = 1 then ithprime(n)-2 else 0 fi end: seq(a(n), n=3..68); (Deutsch)
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CROSSREFS
| Sequence in context: A070408 A176672 A107471 * A046557 A125719 A070975
Adjacent sequences: A107320 A107321 A107322 * A107324 A107325 A107326
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KEYWORD
| nonn
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AUTHOR
| Leroy Quet May 21 2005
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EXTENSIONS
| More terms from Emeric Deutsch (deutsch(AT)duke.poly.edu), Jun 19 2005
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