A021444 Decimal expansion of 1/440.

0, 0, 2, 2, 7, 2, 7, 2, 7, 2, 7, 2, 7, 2, 7, 2, 7, 2, 7, 2, 7, 2, 7, 2, 7, 2, 7, 2, 7, 2, 7, 2, 7, 2, 7, 2, 7, 2, 7, 2, 7, 2, 7, 2, 7, 2, 7, 2, 7, 2, 7, 2, 7, 2, 7, 2, 7, 2, 7, 2, 7, 2, 7, 2, 7, 2, 7, 2, 7, 2, 7, 2, 7, 2, 7, 2, 7, 2, 7, 2, 7, 2, 7, 2, 7, 2, 7, 2, 7, 2, 7, 2, 7, 2, 7, 2, 7, 2, 7

Offset: 0

Author

N. J. A. Sloane

Keywords

• nonn
• cons
• easy

Examples

			0.002272727272727272727272727272727272727272727272727...
		

Links

• Antti Karttunen, Table of n, a(n) for n = 0..1001
• Index entries for linear recurrences with constant coefficients, signature (0,1).

Crossrefs

Cf. A010697.

Programs

Mathematica

First[RealDigits[1/440, 10, 100, -1]] (* or *)
PadRight[{0, 0, 2}, 100, {7, 2}] (* Paolo Xausa, Aug 14 2025 *)

PARI

1/440. \\ Charles R Greathouse IV, Jul 13 2016

Scheme

(define (A021444 n) (cond ((<= n 1) 0) ((= 2 n) n) ((even? n) 7) (else 2))) ;; Antti Karttunen, Sep 14 2017