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