2,2
CRC Handbook of Combinatorial Designs, 1996, p. 649.
Sequence in context: A111003 A140182 A082910 * A056225 A105437 A168140
Adjacent sequences: A023643 A023644 A023645 * A023647 A023648 A023649
nonn
N. J. A. Sloane (njas(AT)research.att.com).