0,3

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

J. L. Davison, J. O. Shallit, Continued Fractions for Some Alternating Series, Monatsh. Math., 111 (1991), 119-126.

S. R. Finch, Mathematical Constants, Cambridge, 2003, Section 6.7.

Sum n=0..inf 1/a(n) = 3 - Gerald McGarvey (Gerald.McGarvey(AT)comcast.net), Jul 20 2004

A006277 := proc(n) options remember; if n <= 1 then RETURN(1) else A006277(n-2)*(A006277(n-1)+1); fi; end;

Sequence in context: A093858 A080568 A091339 this_sequence A004106 A012886 A078918

Adjacent sequences: A006274 A006275 A006276 this_sequence A006278 A006279 A006280

nonn

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