A174995 Products of decimal digits.

0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 25, 27, 28, 30, 32, 35, 36, 40, 42, 45, 48, 49, 54, 56, 63, 64, 72, 81

Offset

1,3

Comments

Apart from the initial zero: finite subset of A002473 with 37 elements: a(37)=81=9*9;

a(n) = A079904(j,i) for certain i,j with 0<=i<=j<=9.

Links

Table of n, a(n) for n=1..37.

Mathematica

Union[Times@@@Tuples[Range[0, 9], 2]] (* Harvey P. Dale, Oct 08 2011 *)

Crossrefs

Sequence in context: A079333 A063938 A002473 * A161466 A178863 A176526

Adjacent sequences: A174992 A174993 A174994 * A174996 A174997 A174998

Keyword

base,fini,full,nonn

Author

Reinhard Zumkeller, Apr 03 2010, Apr 05 2010

Status

approved