login
A011997
Number of (n,3,7) difference families over Z_n.
0
8, 0, 27, 0, 0, 0, 20347, 0
OFFSET
7,1
REFERENCES
CRC Handbook of Combinatorial Designs, 1996, p. 285.
CROSSREFS
Sequence in context: A337550 A088663 A291681 * A187162 A197618 A340953
KEYWORD
nonn,hard
AUTHOR
STATUS
approved