A199990 Numbers with digital product = 10.

25, 52, 125, 152, 215, 251, 512, 521, 1125, 1152, 1215, 1251, 1512, 1521, 2115, 2151, 2511, 5112, 5121, 5211, 11125, 11152, 11215, 11251, 11512, 11521, 12115, 12151, 12511, 15112, 15121, 15211, 21115, 21151, 21511, 25111, 51112, 51121, 51211, 52111, 111125

Offset: 1

Author

Jaroslav Krizek, Nov 13 2011

Keywords

• nonn
• base

Comments

Numbers with one 2, one 5 and zero or more 1s.

Links

• Vincenzo Librandi, Table of n, a(n) for n = 1..100

Crossrefs

Cf. A107696.

Programs

Mathematica

Select[Range[200000], Times @@ IntegerDigits[#] == 10 &] (* T. D. Noe, Nov 16 2011 *)