A211772 Nonprime numbers all of whose divisors are numbers whose decimal digits are in ascending order.
1, 4, 6, 8, 9, 12, 14, 15, 16, 18, 24, 25, 26, 27, 28, 34, 35, 36, 38, 39, 45, 46, 48, 49, 56, 57, 58, 68, 69, 78, 125, 134, 135, 136, 138, 145, 158, 169, 178, 235, 237, 245, 247, 259, 267, 268, 278, 289, 356, 358, 469, 478, 578, 1345, 1357, 1369, 2479, 2569
Offset: 1
Examples
Divisors of 24589: 1, 67, 367, 24589 (all divisors with digits in ascending order).
Links
- Jaroslav Krizek, Table of n, a(n) for n = 1..63 (complete list).
Comments