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A115432
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Numbers n such that the concatenation of n with n-4 gives a square.
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11
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65, 6653, 9605, 218413, 283720, 996005, 58446925, 99960005, 6086712229, 7385370133, 8478948853, 9999600005, 120178240093, 161171620229, 358247912200, 426843573160, 893417179213, 999996000005, 23376713203604
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OFFSET
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1,1
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LINKS
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Table of n, a(n) for n=1..19.
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EXAMPLE
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9605_9601 = 9801^2.
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CROSSREFS
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Cf. A030465, A102567, A115426, A115437, A115428, A115429, A115430, A115431, A115433, A115434, A115435, A115436, A115443.
Sequence in context: A146756 A202386 A294955 * A116104 A116121 A118707
Adjacent sequences: A115429 A115430 A115431 * A115433 A115434 A115435
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KEYWORD
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base,nonn
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AUTHOR
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Giovanni Resta, Jan 25 2006
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STATUS
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approved
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