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A115432 Numbers n such that the concatenation of n with n-4 gives a square. 11
65, 6653, 9605, 218413, 283720, 996005, 58446925, 99960005, 6086712229, 7385370133, 8478948853, 9999600005, 120178240093, 161171620229, 358247912200, 426843573160, 893417179213, 999996000005, 23376713203604 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..19.

EXAMPLE

9605_9601 = 9801^2.

CROSSREFS

Cf. A030465, A102567, A115426, A115437, A115428, A115429, A115430, A115431, A115433, A115434, A115435, A115436, A115443.

Sequence in context: A294955 * A116104 A116121 A118707 A282839 A144661

Adjacent sequences:  A115429 A115430 A115431 * A115433 A115434 A115435

KEYWORD

base,nonn

AUTHOR

Giovanni Resta, Jan 25 2006

STATUS

approved

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Last modified December 18 16:24 EST 2018. Contains 318229 sequences. (Running on oeis4.)