A115536 Numbers k such that the square of k is the concatenation of two numbers m and 4*m.

160378, 169812, 179246, 188680, 198114, 207548, 216982, 226416, 235850, 245284, 254718, 264152, 273586, 283020, 292454, 301888, 311322, 320756, 330190, 339624, 349058, 358492, 367926, 377360, 386794, 396228, 405662

Offset: 1

Author

Giovanni Resta, Jan 25 2006

Keywords

• nonn
• base

Examples

			160378^2 = 25721_102884.
		

Links

• Tanya Khovanova, Non Recursions

Crossrefs

Cf. A102567, A106497, A115527 - A115556.