A330327 a(1)=1; thereafter a(n) = (product of digits of b(n))*(product of digits of b(n-1)), where b = A329804.

1, 2, 6, 0, 0, 24, 0, 0, 45, 0, 0, 12, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 24, 192, 0, 0, 96, 0, 0, 24, 108, 0, 0, 0, 0, 135, 0, 0, 0, 0, 60, 72, 0, 0, 0, 0, 0, 0, 96, 0, 0, 0, 0, 112, 0, 0, 0, 0, 168, 36, 0, 0, 48, 0, 0, 0, 0, 0, 0, 672, 0, 0, 160, 0, 0, 0, 0, 0, 0, 576, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 600

Offset: 1

Author

N. J. A. Sloane, Dec 12 2019

Keywords

• nonn
• base

Comments

By definition, a(n) is also equal to the product of the digits of A330326(n).

Links

• N. J. A. Sloane, Table of n, a(n) for n = 1..10000

Crossrefs

Cf. A329804, A330326.