A115443 Numbers whose square is the concatenation of two numbers k and k-4.

81, 8157, 9801, 467347, 532654, 998001, 76450589, 99980001, 7801738415, 8593817623, 9208120793, 9999800001, 346667333467, 401461854015, 598538145986, 653332666534, 945207479453, 999998000001, 48349470735060

Offset: 1

Author

Giovanni Resta, Jan 25 2006

Keywords

• base
• nonn

Examples

			9605_9601 = 9801^2.
		

Crossrefs

Cf. A030467, A106497, A115432, A115427, A115438, A115439, A115440, A115441, A115442, A115444, A115445, A115446, A115447.