1,4

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

J. Borwein and P. Borwein, A Dictionary of Real Numbers, Wadsworth, Pacific Grove, Calif., 1990, p. v.

H. J. Fischbeck and K. Fischbeck, Formulas. Facts and Constants, Springer-Verlag, NY, 2nd ed., 1987.

Sequence in context: A010527 A102887 A067970 this_sequence A121948 A114141 A089139

Adjacent sequences: A003672 A003673 A003674 this_sequence A003676 A003677 A003678

cons,nonn

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