A309209 Continued fraction expansion of the negation of the constant defined by A265011 (among other formulas, this is Sum_{k >= 1} arctan((-1)^k/k)).

-1, 2, 36, 1, 40, 1, 94, 1, 1

Offset: 0

Author

N. J. A. Sloane, Jul 29 2019; definition corrected Jul 30 2019 (Thanks to Jianing Song for pointing out that something was wrong.)

Keywords

• sign
• cofr
• more

Links

• W. M. Gosper, Material from Bill Gosper's Computers & Math talk, M.I.T., 1989, i+38+1 pages, annotated and scanned, included with the author's permission. (There are many blank pages because about half of the original pages were two-sided, half were one-sided.) See page 8.

Crossrefs

Cf. A265011.

Extensions

Name corrected by Jianing Song, Aug 30 2019