A115442 - OEIS

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A115442

Numbers whose square is the concatenation of two numbers k and k-2.

11

8, 7312, 8991, 32524, 67477, 76568, 4891730, 5108271, 8528094, 71588336, 98999901, 399659933007, 600340066994, 723627738227, 877712329768, 998999999001, 3485626998114, 3787100274614, 6212899725387, 6514373001887

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OFFSET

1,1

LINKS

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

EXAMPLE

8083_8081 = 8991^2.

CROSSREFS

Cf. A030467, A106497, A115431, A115427, A115438, A115439, A115440, A115441, A115443, A115444, A115445, A115446, A115447.

Sequence in context: A354567 A356083 A278854 * A216936 A090494 A079656

Adjacent sequences: A115439 A115440 A115441 * A115443 A115444 A115445

KEYWORD

base,nonn

AUTHOR

Giovanni Resta, Jan 24 2006

STATUS

approved