A230101 a(n) = product of n and all its nonzero digits.

0, 1, 4, 9, 16, 25, 36, 49, 64, 81, 10, 11, 24, 39, 56, 75, 96, 119, 144, 171, 40, 42, 88, 138, 192, 250, 312, 378, 448, 522, 90, 93, 192, 297, 408, 525, 648, 777, 912, 1053, 160, 164, 336, 516, 704, 900, 1104, 1316, 1536, 1764, 250, 255, 520, 795, 1080, 1375, 1680, 1995, 2320, 2655, 360, 366, 744, 1134, 1536, 1950

Offset

0,3

Links

Harvey P. Dale, Table of n, a(n) for n = 0..1000

Index entries for Colombian or self numbers and related sequences

Formula

a(n) = n*A051801.

Example

a(15) = 15*1*5=75

Maple

with transforms; [seq(n*digprod0(n), n=0..200)];

Mathematica

Table[n*Times@@Select[IntegerDigits[n], #!=0&], {n, 0, 70}] (* Harvey P. Dale, May 26 2018 *)

Crossrefs

Cf. A007954, A051801, A098736.

Sequence in context: A098733 A068522 A048385 * A361203 A057147 A213630

Adjacent sequences: A230098 A230099 A230100 * A230102 A230103 A230104

Keyword

base,easy,nonn

Author

N. J. A. Sloane, Oct 12 2013

Status

approved