A115550 Numbers k such that k^2 is the concatenation of two numbers m and 8*m.

18, 36, 168, 252, 336, 1668, 3336, 16668, 33336, 166668, 333336, 1666668, 3333336, 16666668, 22222224, 27777780, 33333336, 113149848, 114678900, 116207952, 117737004, 119266056, 120795108, 122324160, 123853212

Offset: 1

Author

Giovanni Resta, Jan 25 2006

Keywords

• nonn
• base

Examples

			18^2 = 3_24.
		

Crossrefs

Cf. A102567, A106497, A115527 - A115556.