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

1,1

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.

Sequence in context: A027468 A158926 A112524 * A374976 A340119 A271990

Adjacent sequences: A254619 A254620 A254621 * A254623 A254624 A254625

Keyword

nonn,base

Author

David A. Corneth, Feb 03 2015

Status

approved