A116302 Numbers k such that k*(k+3) gives the concatenation of two numbers m and m+2.

27, 71, 79822844, 69852478553064869297984899963806, 77473062193002372448027740546438, 77747359197583788609974143907618, 84341826458653210947638195982114, 85367942837521291760016984490250

Offset: 1

Author

Giovanni Resta, Feb 06 2006

Keywords

• nonn
• base

Examples

			79822844 * 79822847 = 63716866//63716868, where // denotes concatenation.
		

Crossrefs

Cf. A116171, A116296, A116301, A116303, A116309.