5,2
R. E. Peile, Some Topics in Combinatorial Theory. Ph. D. Dissertation, Oxford University, 1979.
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
Sequence in context: A018747 A110067 A145996 * A009673 A018770 A173566
Adjacent sequences: A005272 A005273 A005274 * A005276 A005277 A005278
nonn
N. J. A. Sloane (njas(AT)research.att.com).
