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A115434
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Numbers k such that the concatenation of k with k-7 gives a square.
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11
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8, 16, 1337032, 2084503, 2953232, 4023943, 1330033613070195328, 4036108433661798551, 8283744867954114232, 6247320195351414276186411625291, 9452080202814205132771066881607
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OFFSET
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1,1
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LINKS
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EXAMPLE
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4023943_4023936 = 6343456^2.
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CROSSREFS
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Cf. A030465, A102567, A115426, A115437, A115428, A115429, A115430, A115431, A115432, A115433, A115435, A115436, A115445.
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KEYWORD
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base,nonn
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AUTHOR
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STATUS
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approved
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