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Search: id:A130289
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| A130289 |
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Record values in A130280: minima of { m>1 | (2n+1)^2(m^2-1)+1 is a square} bigger than for all preceding n. |
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+0
2
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| 3, 5, 7, 11, 13, 19, 21, 29, 31, 169, 419, 461, 3269, 7127, 3877019, 22783559, 215308729
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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Most elements of this sequence seem to be 1,2 or 4 times a prime.
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PROGRAM
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(PARI) A130289( L=999, S=1 )={ local( R, T ); for( n=S, L, if( issquare(n) | R >= T = A130280(n), next ); print1( T ", " ); R=T )}
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CROSSREFS
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Cf. A084702, A130280, A130283, A130284, A130288.
Adjacent sequences: A130286 A130287 A130288 this_sequence A130290 A130291 A130292
Sequence in context: A046494 A026603 A126991 this_sequence A132779 A071329 A109358
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KEYWORD
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nonn
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AUTHOR
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M. F. Hasler (Maximilian.Hasler(AT)gmail.com), May 24 2007
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