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A116153 Numbers k such that k concatenated with k-1 gives the product of two numbers which differ by 9. 5

%I

%S 13,41,653,2287,2723,5491,23240971,26823191,60249661,1841968537,

%T 2009317771,3044234903,3258336353,8166731261,9481619237,

%U 1281071245505271100098621541,1551605670846640136726379653

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

%Y Cf. A116147, A116152, A116162, A116284.

%K nonn,base

%O 1,1

%A _Giovanni Resta_, Feb 06 2006

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Last modified September 26 03:40 EDT 2022. Contains 356986 sequences. (Running on oeis4.)