A151780 - OEIS

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A151780

a(n) = 5^(wt(n) - 1) where wt(n) = A000120(n).

1, 1, 5, 1, 5, 5, 25, 1, 5, 5, 25, 5, 25, 25, 125, 1, 5, 5, 25, 5, 25, 25, 125, 5, 25, 25, 125, 25, 125, 125, 625, 1, 5, 5, 25, 5, 25, 25, 125, 5, 25, 25, 125, 25, 125, 125, 625, 5, 25, 25, 125, 25, 125, 125, 625, 25, 125, 125, 625, 125, 625, 625, 3125, 1, 5, 5, 25, 5, 25, 25, 125, 5

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,3

LINKS

Table of n, a(n) for n=1..72.

EXAMPLE

From Omar E. Pol, Jul 21 2009: (Start)

If written as a triangle:

1,5;

1,5,5,25;

1,5,5,25,5,25,25,125;

1,5,5,25,5,25,25,125,5,25,25,125,25,125,125,625;