A116224 - OEIS

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A116224

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

3

23, 27, 10357253, 10577583, 45531191, 45991881, 12823841629508531559818193, 17153953024599261169512903, 34319291138166088695725681, 41203057971387248588060861, 75861857890090990570762781

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

LINKS

Table of n, a(n) for n=1..11.

EXAMPLE

45991881//45991890 = 67817310 * 67817319, where // denotes concatenation.

CROSSREFS

Cf. A116216, A116223, A116355.

Sequence in context: A070774 A045806 A219259 * A127495 A255220 A060703

Adjacent sequences: A116221 A116222 A116223 * A116225 A116226 A116227

KEYWORD

nonn,base

AUTHOR

Giovanni Resta, Feb 06 2006

STATUS

approved