A084129 Continued fraction expansion of 4*Product_{k>=0} (1 - 1/(2^k+1)).

0, 1, 5, 4, 1, 6, 1, 8, 13, 4, 1, 1, 8, 1, 1, 3, 2, 13, 1, 3, 2, 3, 4, 2, 3, 2, 14, 2, 73, 1, 2, 1, 58, 14, 1, 1, 4, 75, 5, 73, 1, 1, 2, 1, 2, 1, 1, 1, 1, 6, 20, 1, 5, 1, 1, 5, 1, 1, 2, 1, 1, 3, 14, 1, 8, 1, 1, 1, 27, 1, 46, 1, 3, 5, 73, 2, 2, 1, 1, 3, 1, 2, 5, 3, 1, 40, 1, 1, 7, 1, 2, 3, 3, 31, 2, 12, 3, 1

Offset

0,3

Links

Table of n, a(n) for n=0..97.

Formula

4*Product_{k>=0} (1 - 1/(2^k+1)) = 0.838844883590215195...

Prog

(PARI) contfrac(4*prod(k=0, 1000, 1-1./(2^k+1)))

Crossrefs

Cf. A085011.

Sequence in context: A028875 A130815 A342797 * A011503 A296498 A195297

Adjacent sequences: A084126 A084127 A084128 * A084130 A084131 A084132

Keyword

cofr,nonn

Author

Benoit Cloitre, Jun 19 2003

Status

approved