A113795 n is the product of T(d_i) where d_i are the nonzero digits of n and T(k) denotes the k-th triangular number.

1, 15, 6615, 19360877637633638400

Offset

1,2

Links

Table of n, a(n) for n=1..4.

Example

6615 = T(6)*T(6)*T(1)*T(5)=21*21*1*15.

Crossrefs

Sequence in context: A204677 A198250 A066968 * A205155 A208095 A271402

Adjacent sequences: A113792 A113793 A113794 * A113796 A113797 A113798

Keyword

base,nonn

Author

Giovanni Resta, Jan 21 2006

Status

approved