4,1

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).

J. Riordan, An Introduction to Combinatorial Analysis, Wiley, 1958, p. 210.

Index entries for sequences related to Latin squares and rectangles

Sequence in context: A052753 A052520 A052724 this_sequence A151720 A052652 A052732

Adjacent sequences: A000533 A000534 A000535 this_sequence A000537 A000538 A000539

nonn

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