A116175 Numbers k such that k concatenated with k+2 gives the product of two numbers which differ by 9.

1122070, 1538990, 3692998, 4422608, 1661985831086046580, 3508493742205242178, 5949206094811297768, 11324756194731856386028, 44020205992737767475178, 55147546334394567747178

Offset

1,1

Links

Table of n, a(n) for n=1..10.

Example

4422608//4422610 = 6650265 * 6650274, where // denotes
concatenation.

Crossrefs

Cf. A116169, A116174, A116182, A116306.

Sequence in context: A245662 A186066 A059121 * A278932 A059767 A069583

Adjacent sequences: A116172 A116173 A116174 * A116176 A116177 A116178

Keyword

nonn,base

Author

Giovanni Resta, Feb 06 2006

Status

approved