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A260462 Numbers k such that the digits of k are in increasing order and k divides (reverse(k) * 10^m) for some sufficiently-large integer m. 2

%I #19 Jul 27 2015 22:10:07

%S 12,15,16,18,24,25,36,45,48,125,128,144,168,225,256,288,1125,1344,

%T 2688,12288,111888

%N Numbers k such that the digits of k are in increasing order and k divides (reverse(k) * 10^m) for some sufficiently-large integer m.

%C This sequence consists of the set of distinct numbers that result from taking the terms of A260461, sorting the digits of each term in ascending order, and discarding the leading zeros.

%C (Equivalently, this sequence consists of the set of distinct numbers that result from taking the terms of A096091 whose nonzero digits are not all the same, sorting the digits of each term in ascending order, and discarding the leading zeros.)

%C Through a(21) = 111888, the digits 7 and 9 do not appear.

%C After a(21) = 111888, there are no more terms through 10^27. Presumably, the sequence is full. Is there a proof?

%Y Cf. A096091, A260461.

%K nonn,base

%O 1,1

%A _Jon E. Schoenfield_, Jul 26 2015

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Last modified April 25 03:15 EDT 2024. Contains 371964 sequences. (Running on oeis4.)