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A115435 Numbers n such that the concatenation of n with n-8 gives a square. 12
2137, 2892, 6369, 12217, 21964, 28233, 42312, 4978977, 9571608, 18642249, 32288908, 96039609, 200037461217, 305526508312, 570666416233, 638912248204, 996003996009, 1846991026584, 3251664327537, 4859838227992 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..20.

EXAMPLE

18642249_18642241 = 43176671^2.

CROSSREFS

Cf. A030465, A102567, A115426, A115437, A115428, A115429, A115430, A115431, A115432, A115433, A115434, A115436, A115446.

Sequence in context: A233216 A319008 A020398 * A116095 A252547 A211601

Adjacent sequences:  A115432 A115433 A115434 * A115436 A115437 A115438

KEYWORD

base,nonn

AUTHOR

Giovanni Resta, Jan 25 2006

STATUS

approved

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Last modified June 15 15:16 EDT 2021. Contains 345049 sequences. (Running on oeis4.)