

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
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OFFSET

1,1


LINKS



EXAMPLE

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


CROSSREFS



KEYWORD

nonn,base


AUTHOR



STATUS

approved



