12,2

CRC Handbook of Combinatorial Designs, 1996, p. 647.

M. Meringer, Tables of Regular Graphs

Sequence in context: A139224 A032469 A006927 this_sequence A135748 A145386 A135327

Adjacent sequences: A014372 A014373 A014374 this_sequence A014376 A014377 A014378

nonn

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