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Search: id:A030465
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| A030465 |
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Numbers n such that n concatenated with n+1 is a square. |
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+0
19
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| 183, 328, 528, 715, 6099, 13224, 40495, 106755, 453288, 2066115, 2975208, 22145328, 28027683, 110213248, 110667555, 147928995, 178838403, 226123528, 275074575, 333052608, 378698224, 445332888, 446245635
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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Also called Sastry numbers. - Lekraj Beedassy (blekraj(AT)yahoo.com), Jul 18 2008
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REFERENCES
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J.-M. De Koninck, Ces nombres qui nous fascinent, Entry 183, p. 56, Ellipses, Paris 2008.
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CROSSREFS
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Cf. A030466, A030467, A054214, A054215, A054216, A020339, A020340.
Sequence in context: A145525 A028676 A133609 this_sequence A147270 A147124 A061657
Adjacent sequences: A030462 A030463 A030464 this_sequence A030466 A030467 A030468
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KEYWORD
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nonn,base
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AUTHOR
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Patrick De Geest (pdg(AT)worldofnumbers.com)
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