A181181 Product of the first n zero-free positive numbers with digital sum n.

1, 22, 756, 35464, 2112320, 152681760, 12984899200, 1270453824640, 140587147048320, 204867922610391040, 222308451584243548160, 277934723066170025856000, 385262452280397590195584000, 954777912911324324000159027200, 3057686768847576381964905048883200

Offset

1,2

Comments

Product of the first n values in the n-th row of the triangular array A069800 in which n-th row consists of numbers (excluding the digit 0) with digit sum n arranged in increasing numerical order.

Links

Table of n, a(n) for n=1..15.

Example

a(3) = 756 = 3 * 12 * 21.
a(4) = 35464 = 4 * 13 * 22 * 31.
a(5) = 2112320 = 5 * 14 * 23 * 32 * 41.

Crossrefs

Cf. A007953, A069800, A181178.

Sequence in context: A027409 A159189 A067768 * A160037 A278440 A152957

Adjacent sequences: A181178 A181179 A181180 * A181182 A181183 A181184

Keyword

nonn,base,easy

Author

Jonathan Vos Post, Jan 25 2011

Status

approved