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Denominators of convergents to Lehmer's constant.
(Formerly M1545 N0603)
5

%I M1545 N0603 #21 Oct 13 2024 01:27:18

%S 1,2,5,27,923,909182,1046593950039,1168971346319460027570137,

%T 1730152138254248421873938035305987364739567671241

%N Denominators of convergents to Lehmer's constant.

%D D. H. Lehmer, A cotangent analogue of continued fractions, Duke Math. J., 4 (1935), 323-340.

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

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

%D J. W. Wrench, Jr., personal communication.

%H D. H. Lehmer, <a href="/A002065/a002065_1.pdf">A cotangent analogue of continued fractions</a>, Duke Math. J., 4 (1935), 323-340. [Annotated scanned copy]

%H J. W. Wrench, Jr., <a href="/A002065/a002065_2.pdf">Letters to N. J. A. Sloane, Feb 1974</a>.

%Y Cf. A002794, A002665, A030125, A002065.

%K nonn,frac

%O 0,2

%A _N. J. A. Sloane_