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A115434
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Numbers n such that the concatenation of n with n-7 gives a square.
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11
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8, 16, 1337032, 2084503, 2953232, 4023943, 1330033613070195328, 4036108433661798551, 8283744867954114232, 6247320195351414276186411625291, 9452080202814205132771066881607
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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EXAMPLE
| 4023943_4023936 = 6343456^2.
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CROSSREFS
| Cf. A030465, A102567, A115426, A115437, A115428, A115429, A115430, A115431, A115432, A115433, A115435, A115436, A115445.
Sequence in context: A061747 A109585 A024280 * A024107 A066554 A046459
Adjacent sequences: A115431 A115432 A115433 * A115435 A115436 A115437
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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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