A280732 Numbers whose digit string can be partitioned into three nonempty parts a <= b <= c such that a*b = c.

111, 122, 133, 144, 155, 166, 177, 188, 199, 224, 236, 248, 339, 2510, 2612, 2714, 2816, 2918, 3412, 3515, 3618, 3721, 3824, 3927, 4416, 4520, 4624, 4728, 4832, 4936, 5525, 5630, 5735, 5840, 5945, 6636, 6742, 6848, 6954, 7749, 7856, 7963, 8864, 8972, 9981

Offset: 1

Author

N. J. A. Sloane, Jan 10 2017

Keywords

• nonn
• base
• easy

Comments

The parts may not start with 0.

Examples

			For n = 2|4|8: 2 <= 4 <= 8, and 2*4=8, so 248 is a term.
For n = 5|9|45: 5 <= 9 <= 45, and 5*9=45, so 5945 is a term.
		

Links

• Lars Blomberg, Table of n, a(n) for n = 1..10000

Crossrefs

A subset of A280635. Cf. also A280733.

Extensions

More terms from Lars Blomberg, Jan 11 2017