A116132 Numbers k such that k concatenated with k-4 gives the product of two numbers which differ by 7.

74, 59264, 510782, 906902, 81790664, 92776472, 10876856041862, 11796926254874, 18332259798794, 18388650720624, 32624670587648, 32699883214248, 43103618706398, 44916698243804, 66132258426302

Offset: 1

Author

Giovanni Resta, Feb 06 2006

Keywords

• nonn
• base

Examples

			92776472//92776468 = 96320541 * 96320548, where // denotes concatenation.
		

Crossrefs

Cf. A116119, A116131, A116133, A116205, A116263.