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A115433
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Numbers n such that the concatenation of n with n-5 gives a square.
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11
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21, 30, 902406, 959721, 6040059046, 6242406405, 9842410005, 9900249006, 15033519988494, 17250863148969, 22499666270469, 27632040031654, 34182546327286, 37487353123861, 52213551379230, 74230108225630
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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EXAMPLE
| 902406_902401 = 949951^2.
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CROSSREFS
| Cf. A030465, A102567, A115426, A115437, A115428, A115429, A115430, A115431, A115432, A115434, A115435, A115436, A115444.
Sequence in context: A187965 * A116096 A116116 A079394 A112375 A067599
Adjacent sequences: A115430 A115431 A115432 * A115434 A115435 A115436
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KEYWORD
| base,nonn
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AUTHOR
| Giovanni Resta (g.resta(AT)iit.cnr.it), Jan 25 2006
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