A010893 (n,4,1) difference families over Z_n.

1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 10, 0, 0, 0, 0, 0, 0, 0, 0, 224, 0, 0, 206, 0, 0, 0, 0, 0, 0, 0, 0, 18132, 0, 0, 12048

Offset

13,25

References

CRC Handbook of Combinatorial Designs, 1996, p. 286.

Links

Table of n, a(n) for n=13..64.

Crossrefs

Sequence in context: A258759 A350793 A181499 * A181501 A213704 A278099

Adjacent sequences: A010890 A010891 A010892 * A010894 A010895 A010896

Keyword

nonn,hard

Author

N. J. A. Sloane.

Status

approved