A116153 Numbers k such that k concatenated with k-1 gives the product of two numbers which differ by 9.

13, 41, 653, 2287, 2723, 5491, 23240971, 26823191, 60249661, 1841968537, 2009317771, 3044234903, 3258336353, 8166731261, 9481619237, 1281071245505271100098621541, 1551605670846640136726379653

Offset

1,1

Links

Table of n, a(n) for n=1..17.

Crossrefs

Cf. A116147, A116152, A116162, A116284.

Sequence in context: A287307 A332255 A201121 * A116209 A002673 A081301

Adjacent sequences: A116150 A116151 A116152 * A116154 A116155 A116156

Keyword

nonn,base

Author

Giovanni Resta, Feb 06 2006

Status

approved