0,2

Apparently, a(n) divides A000894(n). - R. Stephan, Aug 05 2004

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.

Adjacent sequences: A002460 A002461 A002462 this_sequence A002464 A002465 A002466

Sequence in context: A161806 A003689 A127868 this_sequence A013281 A013274 A013279

nonn

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