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A116175 Numbers n such that n concatenated with n+2 gives the product of two numbers which differ by 9. 4
1122070, 1538990, 3692998, 4422608, 1661985831086046580, 3508493742205242178, 5949206094811297768, 11324756194731856386028, 44020205992737767475178, 55147546334394567747178 (list; graph; refs; listen; history; text; internal format)
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: A186066 A059121 A176194 * A278932 A059767 A069583

Adjacent sequences:  A116172 A116173 A116174 * A116176 A116177 A116178

KEYWORD

nonn,base

AUTHOR

Giovanni Resta, Feb 06 2006

STATUS

approved

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Last modified February 19 16:24 EST 2020. Contains 332045 sequences. (Running on oeis4.)