A116335 Numbers k such that k*(k+2) gives the concatenation of two numbers m and m+7.

7746, 8020, 33294317, 66705682, 98000200, 340465755424, 476452552744, 523547447255, 659534244575, 866013200680, 998000002000, 3695104677080133, 3755782995538767, 4198081170077530, 4803478892324965, 5196521107675034

Offset: 1

Author

Giovanni Resta, Feb 06 2006

Keywords

• nonn
• base

Examples

			98000200 * 98000202 = 96040393//96040400, where // denotes concatenation.
		

Crossrefs

Cf. A115429, A116315, A116336, A116344.