A122405 Numbers of the form Product_i b_i^e_i, where the b_i are all distinct values > 1 and the e_i are a permutation of the b_i.

1, 4, 27, 72, 108, 256, 800, 1024, 2304, 3125, 5184, 6272, 6912, 9216, 10368, 12500, 16384, 18432, 20736, 21600, 27648, 30375, 36000, 41472, 46656, 48600, 62208, 84375, 102400, 121500, 124416, 157464, 169344, 186624, 204800, 209952, 225000

Offset

1,2

Links

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

Example

2^2 * 3^4 * 4^3 = 20736, so 20736 is in the sequence.

Crossrefs

Cf. A122406.

Sequence in context: A356433 A272859 A054412 * A122406 A276372 A071837

Adjacent sequences: A122402 A122403 A122404 * A122406 A122407 A122408

Keyword

nonn

Author

Franklin T. Adams-Watters, Sep 01 2006

Status

approved