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

Author

Giovanni Resta, Jan 25 2006

Keywords

• nonn
• base

Examples

			73469388_24489796 = 85714286^2.
		

Crossrefs

Cf. A102567, A106497, A115527 - A115556.