0,2

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

N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).

H. E. Salzer, The approximation of numbers as sums of reciprocals, Amer. Math. Monthly, 54 (1947), 135-142.

A. V. Aho and N. J. A. Sloane, Some doubly exponential sequences, Fib. Quart., 11 (1973), 429-437.

Index entries for sequences of form a(n+1)=a(n)^2 + ...

Apparently a(n+2)=A002715(2*n)+1. - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Apr 23 2007

Sequence in context: A009273 A128299 A143672 this_sequence A103099 A119029 A162120

Adjacent sequences: A001507 A001508 A001509 this_sequence A001511 A001512 A001513

nonn,nice

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