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A115547 Numbers n such that the concatenation of 7*n with n gives a square. 0
11909262759924385633270321361058601134215500945179584121, 21172022684310018903591682419659735349716446124763705104, 33081285444234404536862003780718336483931947069943289225, 47637051039697542533081285444234404536862003780718336484 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..4.

CROSSREFS

Cf. A102567, A106497, A115527 - A115556.

Sequence in context: A095502 A115453 A095504 * A115548 A095506 A291354

Adjacent sequences:  A115544 A115545 A115546 * A115548 A115549 A115550

KEYWORD

nonn,base

AUTHOR

Giovanni Resta, Jan 25 2006

STATUS

approved

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Last modified November 20 10:41 EST 2017. Contains 294963 sequences.