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

1,1

Links

Table of n, a(n) for n=1..15.

Example

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

Crossrefs

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

Sequence in context: A278378 A324523 A145695 * A257534 A063680 A277841

Adjacent sequences: A116129 A116130 A116131 * A116133 A116134 A116135

Keyword

nonn,base

Author

Giovanni Resta, Feb 06 2006

Status

approved