A254622 Number of zerofree positive integers of at most n digits having product of digits less than or equal to sum of digits.

9, 27, 61, 124, 255, 474, 860, 1597, 2726, 4232, 6741, 10391, 16177, 24480, 34926, 47875, 65896, 92255, 139262, 198988, 271642, 357674, 474239, 609442, 773493, 1029477, 1404094, 1857856, 2392385, 3169652, 4059322, 5102419, 6482700, 8041992

Offset: 1

Author

David A. Corneth, Feb 03 2015

Keywords

• nonn
• base

Comments

See A254621 for the numbers with this property. - Wolfdieter Lang, Feb 23 2015

Links

• David A. Corneth, Table of n, a(n) for n = 1..2000

Crossrefs

Cf. A052382, A062996, A254621.