login
A021316
Decimal expansion of 1/312.
1
0, 0, 3, 2, 0, 5, 1, 2, 8, 2, 0, 5, 1, 2, 8, 2, 0, 5, 1, 2, 8, 2, 0, 5, 1, 2, 8, 2, 0, 5, 1, 2, 8, 2, 0, 5, 1, 2, 8, 2, 0, 5, 1, 2, 8, 2, 0, 5, 1, 2, 8, 2, 0, 5, 1, 2, 8, 2, 0, 5, 1, 2, 8, 2, 0, 5, 1, 2, 8, 2, 0, 5, 1, 2, 8, 2, 0, 5, 1, 2, 8, 2, 0, 5, 1, 2, 8, 2, 0, 5, 1, 2, 8, 2, 0, 5, 1, 2, 8
OFFSET
0,3
COMMENTS
Period 6: after 0.003, 205128 repeats endlessly. - Alonso del Arte, Apr 26 2018
FORMULA
a(n) = (18 - 3*cos(n*Pi/3) - 9*cos(2*n*Pi/3) + 5*sqrt(3)*sin(n*Pi/3) - 11*sqrt(3)*sin(2*n*Pi/3))/6 for n > 2 with a(0)=a(1)=0, a(2)=3. - Wesley Ivan Hurt, Oct 04 2018
EXAMPLE
0.0032051282051282051282051282...
MATHEMATICA
Join[{0, 0}, RealDigits[1/312, 10, 120][[1]]] (* or *) PadRight[{0, 0, 3, 2}, 120, {1, 2, 8, 2, 0, 5}] (* Harvey P. Dale, May 30 2013 *)
PROG
(PARI) 1/312. \\ Altug Alkan, Oct 04 2018
CROSSREFS
Cf. A021160 (1/156).
Sequence in context: A198223 A331095 A138377 * A092092 A308179 A086800
KEYWORD
nonn,cons,easy
STATUS
approved