A014871 Numbers k that divide s(k), where s(1)=1, s(j)=20*s(j-1)+j.

1, 2, 4, 5, 6, 10, 12, 14, 18, 19, 20, 28, 30, 36, 38, 42, 54, 55, 60, 70, 76, 84, 90, 95, 98, 108, 110, 114, 126, 140, 156, 162, 180, 190, 196, 210, 220, 228, 252, 266, 270, 294, 305, 324, 330, 342, 361, 378, 380, 406, 420, 468, 486, 490, 532, 540, 570, 588

Offset: 1

Author

N. J. A. Sloane, Olivier Gérard

Keywords

• nonn

Crossrefs

Cf. A014904.

Formula

{n: n | A014904(n)}. - R. J. Mathar, Jul 15 2010