0,1

N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).

Shallit, Jeffrey; Predictable regular continued cotangent expansions. J. Res. Nat. Bur. Standards Sect. B 80B (1976), no. 2, 285-290.

Sequence in context: A004100 A103156 A012865 this_sequence A117526 A051498 A092528

Adjacent sequences: A006270 A006271 A006272 this_sequence A006274 A006275 A006276

nonn

N. J. A. Sloane (njas(AT)research.att.com).