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Search: id:A077321
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| A077321 |
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Rearrange primes so as to form a triangle in which n-th row contains the n smallest primes == 1 (mod n) which have not occurred earlier. |
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+0
5
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| 2, 3, 5, 7, 13, 19, 17, 29, 37, 41, 11, 31, 61, 71, 101, 43, 67, 73, 79, 97, 103, 113, 127, 197, 211, 239, 281, 337, 89, 137, 193, 233, 241, 257, 313, 353, 109, 163, 181, 199, 271, 307, 379, 397, 433, 131, 151, 191, 251, 311, 331, 401, 421, 431, 461, 23, 419, 463, 617
(list; table; graph; listen)
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OFFSET
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1,1
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EXAMPLE
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Triangle begins:
2
3 5
7 13 19
17 29 37 41
11 31 61 71 101
...
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MAPLE
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A077321 := proc(nmax) local n, a, i, p; a := []; n :=1; while nops(a) < nmax do for i from 1 to n do p := 2; while ( p in a ) or (p-1) mod n <> 0 do p := nextprime(p); od; a := [op(a), p]; od; n := n+1; od; RETURN(a); end: A077321(100); - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Feb 03 2007
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CROSSREFS
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Cf. A077322, A077323, A077324, A077325.
Cf. A100787, A100788, A100789, A100790.
Sequence in context: A077316 A082011 A101044 this_sequence A165666 A154579 A082885
Adjacent sequences: A077318 A077319 A077320 this_sequence A077322 A077323 A077324
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KEYWORD
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nonn,tabl
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AUTHOR
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Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Nov 04 2002, Nov 30 2004
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EXTENSIONS
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More terms from Ray Chandler (rayjchandler(AT)sbcglobal.net), Dec 10 2004
Edited by N. J. A. Sloane (njas(AT)research.att.com), Sep 14 2008 at the suggestion of R. J. Mathar (mathar(AT)strw.leidenuniv.nl)
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