A116224 Numbers k such that k concatenated with k+9 gives the product of two numbers which differ by 9.

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

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