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A211772 Nonprime numbers all of whose divisors are numbers whose decimal digits are in ascending order. 2

%I #8 Feb 12 2013 18:06:02

%S 1,4,6,8,9,12,14,15,16,18,24,25,26,27,28,34,35,36,38,39,45,46,48,49,

%T 56,57,58,68,69,78,125,134,135,136,138,145,158,169,178,235,237,245,

%U 247,259,267,268,278,289,356,358,469,478,578,1345,1357,1369,2479,2569

%N Nonprime numbers all of whose divisors are numbers whose decimal digits are in ascending order.

%C Sequence is finite with 63 terms, last term is a(63) = 134689.

%C Complement of A052015 with respect to A190218. Subsequence of A211771.

%H Jaroslav Krizek, <a href="/A211772/b211772.txt">Table of n, a(n) for n = 1..63</a> (complete list).

%e Divisors of 24589: 1, 67, 367, 24589 (all divisors with digits in ascending order).

%Y Cf. A052015 (primes with distinct digits in ascending order), A190218 (numbers all of whose divisors are numbers whose decimal digits are in ascending order), A211771 (nonprime numbers with distinct digits in ascending order).

%K nonn,base,fini,full

%O 1,2

%A _Jaroslav Krizek_, May 07 2012

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Last modified August 2 12:18 EDT 2024. Contains 374845 sequences. (Running on oeis4.)