A116096 Numbers k such that k concatenated with k-9 gives the product of two numbers which differ by 4.

21, 30, 902406, 959721, 6040059046, 6242406405, 9842410005, 9900249006, 15033519988494, 17250863148969, 22499666270469, 27632040031654, 34182546327286, 37487353123861, 52213551379230, 74230108225630

Offset: 1

Author

Giovanni Resta, Feb 06 2006

Keywords

• nonn
• base

Examples

			9900249006//9900248997 = 9949999499 * 9949999503, where // denotes concatenation.
		

Crossrefs

Cf. A116095, A116097, A116104, A116227.