3,1

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).

K. Yamamoto, Structure polynomial of Latin rectangles and its application to a combinatorial problem, Memoirs of the Faculty of Science, Kyusyu University, Series A, 10 (1956), 1-13.

Sequence in context: A096542 A009206 A088874 this_sequence A070078 A054438 A010341

Adjacent sequences: A002631 A002632 A002633 this_sequence A002635 A002636 A002637

sign

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