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Search: id:A077317
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| A077317 |
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a(n) is the n-th prime == 1 (mod n). |
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+0
5
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| 2, 5, 19, 29, 71, 43, 211, 193, 271, 191, 661, 277, 937, 463, 691, 769, 1531, 613, 2357, 1021, 1723, 1409, 3313, 1609, 3701, 2029, 3187, 2437, 6961, 1741, 7193, 3617, 4951, 3877, 7001, 3169, 10657, 6271, 7879, 5521, 13613, 3823, 15137, 7349, 9091, 7499
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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a(n) is the n-th prime in the arithmetic progression with first term 1 and common difference n.
Main diagonal of A077316.
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EXAMPLE
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a(5) =71, the fifth prime in the sequence 1,6,11,16,21,26,31,36,41,46,51,56,61,66,71,...
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MAPLE
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a:=proc(n) local N, B, j: N:=[seq(n*x+1, x=0..500)]: B:={}: for j from 1 to nops(N) do if isprime(N[j])=true then B:=B union {N[j]} else fi od: B[n]: end: seq(a(n), n=1..55); - Emeric Deutsch (deutsch(AT)duke.poly.edu), Sep 03 2005
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CROSSREFS
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Cf. A034694, A077316, A077318, A077319, A093871.
Sequence in context: A127437 A045368 A027714 this_sequence A092946 A090700 A105889
Adjacent sequences: A077314 A077315 A077316 this_sequence A077318 A077319 A077320
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KEYWORD
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nonn
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AUTHOR
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Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Nov 04 2002, Jul 23 2005 (submitted incorrectly on two separate occasions; each time it has had to be corrected)
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EXTENSIONS
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Edited, corrected and extended by Emeric Deutsch (deutsch(AT)duke.poly.edu), Sep 03 2005 and by Frank Adams-Watters (FrankTAW(AT)Netscape.net), Aug 29 2006
Edited by N. J. A. Sloane (njas(AT)research.att.com), Aug 23 2008 at the suggestion of R. J. Mathar
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