0,2

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

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

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

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).