A115533 Numbers k such that the concatenation of 3*k with k gives a square.

24489796, 55102041, 97959184, 15976331361, 28402366864, 44378698225, 63905325444, 86982248521, 24489795918367346938775510204081632653061224489796

Offset

1,1

Links

Table of n, a(n) for n=1..9.

Example

73469388_24489796 = 85714286^2.

Crossrefs

Cf. A102567, A106497, A115527 - A115556.

Sequence in context: A203260 A268290 A183791 * A256013 A187315 A083636

Adjacent sequences: A115530 A115531 A115532 * A115534 A115535 A115536

Keyword

nonn,base

Author

Giovanni Resta, Jan 25 2006

Status

approved