A021997 - OEIS

%I #12 Nov 22 2024 16:39:38

%S 0,0,1,0,0,7,0,4,9,3,4,5,4,1,7,9,2,5,4,7,8,3,4,8,4,3,9,0,7,3,5,1,4,6,

%T 0,2,2,1,5,5,0,8,5,5,9,9,1,9,4,3,6,0,5,2,3,6,6,5,6,5,9,6,1,7,3,2,1,2,

%U 4,8,7,4,1,1,8,8,3,1,8,2,2,7,5,9,3,1,5,2,0,6,4,4,5,1,1,5,8,1,0

%N Decimal expansion of 1/993.

%C Generalization:

%C   1/3 = sum (7^i/10^(i+1)), i >= 0,

%C   1/93 = sum (7^i/100^(i+1)), i >= 0,

%C   1/993 = sum (7^i/1000^(i+1)), i >= 0, (this sequence)

%C 1/9993 = sum (7^i/1000^(i+1)), i >= 0, ... - _Daniel Forgues_, Oct 28 2011

%t Join[{0,0},RealDigits[1/993,10,120][[1]]] (* _Harvey P. Dale_, Sep 06 2021 *)

%t realDigitsRecip[993] (* The realDigitsRecip program is at A021200 *) (* _Harvey P. Dale_, Nov 22 2024 *)

%K nonn,cons

%O 0,6

%A _N. J. A. Sloane_.