5,2

CRC Handbook of Combinatorial Designs, 1996, p. 649.

Sequence in context: A103234 A074061 A125081 this_sequence A145387 A034923 A013022

Adjacent sequences: A023641 A023642 A023643 this_sequence A023645 A023646 A023647

nonn

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