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

Author

Benoit Cloitre, Jun 19 2003

Keywords

• cofr
• nonn

Crossrefs

Cf. A085011.

Programs

PARI

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

Formula

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