2,2
CRC Handbook of Combinatorial Designs, 1996, p. 649.
Sequence in context: A111003 A140182 A082910 this_sequence A056225 A105437 A088100
Adjacent sequences: A023643 A023644 A023645 this_sequence A023647 A023648 A023649
nonn
N. J. A. Sloane (njas(AT)research.att.com).
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