2,2

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).

A. Fletcher, J. C. P. Miller, L. Rosenhead and L. J. Comrie, An Index of Mathematical Tables. Vols. 1 and 2, 2nd ed., Blackwell, Oxford and Addison-Wesley, Reading, MA, 1962, Vol. 1, p. 362.

G. Pr\'{e}vost, Tables de Fonctions Sph\'{e}riques. Gauthier-Villars, Paris, 1933, pp. 156-157.

1 if n=2, n * |A002596(n)| else. - Ralf Stephan (ralf(AT)ark.in-berlin.de), Sep 01 2003

Sequence in context: A109218 A053748 A075358 this_sequence A031106 A143582 A132404

Adjacent sequences: A002458 A002459 A002460 this_sequence A002462 A002463 A002464

nonn

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