A115441 Numbers whose square is the concatenation of two numbers k and k+9.

465, 536, 718, 822, 3428, 6573, 90907, 980202, 3636361, 6363640, 41176468, 58823533, 413533838, 426573430, 428571426, 432620009, 567379992, 571428575, 573426571, 586466163, 686261111, 725274729, 727272725, 731321308

Offset: 1

Author

Giovanni Resta, Jan 24 2006

Keywords

• base
• nonn

Examples

			82640_82649 = 90907^2.
		

Crossrefs

Cf. A030467, A106497, A115430, A115427, A115438, A115439, A115440, A115442, A115443, A115444, A115445, A115446, A115447.