A021070 Decimal expansion of 1/66.

0, 1, 5, 1, 5, 1, 5, 1, 5, 1, 5, 1, 5, 1, 5, 1, 5, 1, 5, 1, 5, 1, 5, 1, 5, 1, 5, 1, 5, 1, 5, 1, 5, 1, 5, 1, 5, 1, 5, 1, 5, 1, 5, 1, 5, 1, 5, 1, 5, 1, 5, 1, 5, 1, 5, 1, 5, 1, 5, 1, 5, 1, 5, 1, 5, 1, 5, 1, 5, 1, 5, 1, 5, 1, 5, 1, 5, 1, 5, 1, 5, 1, 5, 1, 5, 1, 5, 1, 5, 1, 5, 1, 5, 1, 5, 1, 5, 1, 5

Offset: 0

Author

N. J. A. Sloane

Keywords

• nonn
• cons
• mult
• easy

Examples

			0.015151515151515151515151515...
		

Links

• Index entries for linear recurrences with constant coefficients, signature (0,1).

Crossrefs

A010686 shifted right.

Programs

Mathematica

Join[{0},RealDigits[1/66,10,120][[1]]] (* or *) PadRight[{0},120,{5,1}] (* Harvey P. Dale, Dec 26 2021 *)

Formula

Multiplicative with a(2^e) = 5, a(p^e) = 1 otherwise. - David W. Wilson, Jun 12 2005

Dirichlet g.f.: zeta(s) * (1 + 1/2^(s-2)). - Amiram Eldar, Jun 09 2025