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A066461
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a(3) = 5; a(n) = min(x>1,x^2+x*n+n^2 = 1 mod(x+n)).
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5, 11, 3, 29, 5, 13, 7, 23, 4, 131, 8, 25, 13, 35, 7, 305, 5, 37, 19, 47, 10, 91, 14, 19, 25, 59, 6, 869, 9, 61, 31, 21, 16, 149, 20, 73, 37, 83, 7, 1721, 13, 85, 43, 95, 22, 281, 11, 69, 14, 107, 19, 211, 8, 39, 55, 119, 28, 3539
(list; graph; refs; listen; history; internal format)
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OFFSET
| 3,1
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FORMULA
| a(n)=n^2-n-1 for n=3, 4, 6, 12, 18, 30, 42, 60, 72...
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CROSSREFS
| Sequence in context: A125685 A098147 A100298 * A117069 A145355 A110353
Adjacent sequences: A066458 A066459 A066460 * A066462 A066463 A066464
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KEYWORD
| nonn
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AUTHOR
| Benoit Cloitre (benoit7848c(AT)orange.fr), Jan 02 2002
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