A151784 a(n) = 6^(wt(n) - 1) where wt(n) = A000120(n).

1, 1, 6, 1, 6, 6, 36, 1, 6, 6, 36, 6, 36, 36, 216, 1, 6, 6, 36, 6, 36, 36, 216, 6, 36, 36, 216, 36, 216, 216, 1296, 1, 6, 6, 36, 6, 36, 36, 216, 6, 36, 36, 216, 36, 216, 216, 1296, 6, 36, 36, 216, 36, 216, 216, 1296, 36, 216, 216, 1296, 216, 1296, 1296, 7776, 1, 6, 6, 36, 6, 36, 36

Offset: 1

Author

N. J. A. Sloane, Jun 25 2009

Keywords

• nonn

Examples

			From _Omar E. Pol_, Jul 21 2009: (Start)
If written as a triangle:
  1;
  1,6;
  1,6,6,36;
  1,6,6,36,6,36,36,216;
  1,6,6,36,6,36,36,216,6,36,36,216,36,216,216,1296;
  1,6,6,36,6,36,36,216,6,36,36,216,36,216,216,1296,6,36,36,216,36,216,216,...
(End)
		

Crossrefs

Cf. A000120, A048881, A048896, A147610, A151780, A151783, A000120.

Cf. A000400. - Omar E. Pol, Jul 21 2009

Programs

PARI

a(n) = 6^(hammingweight(n)-1); \\ Michel Marcus, Nov 15 2022