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A115431
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Numbers n such that the concatenation of n with n-2 gives a square.
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11
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6, 5346, 8083, 10578, 45531, 58626, 2392902, 2609443, 7272838, 51248898, 98009803, 159728062051, 360408196038, 523637103531, 770378933826, 998000998003, 1214959556998, 1434212848998, 3860012299771, 4243705560771
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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EXAMPLE
| 8083_8081 = 8991^2.
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CROSSREFS
| Cf. A030465, A102567, A115426, A115437, A115428, A115429, A115430, A115432, A115433, A115434, A115435, A115436, A115442.
Sequence in context: A066061 A028366 * A116135 A011788 A172649 A111152
Adjacent sequences: A115428 A115429 A115430 * A115432 A115433 A115434
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KEYWORD
| base,nonn
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AUTHOR
| Giovanni Resta (g.resta(AT)iit.cnr.it), Jan 24 2006
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