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A011996 (n,3,6) difference families over Z_n. 0
1, 0, 7, 12, 24, 0, 209, 3561, 5285, 0, 375372, 2460490 (list; graph; refs; listen; history; text; internal format)
OFFSET

5,3

REFERENCES

CRC Handbook of Combinatorial Designs, 1996, p. 285.

LINKS

Table of n, a(n) for n=5..16.

CROSSREFS

Sequence in context: A097925 A132195 A076852 * A190554 A273244 A273298

Adjacent sequences:  A011993 A011994 A011995 * A011997 A011998 A011999

KEYWORD

nonn,hard

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified September 26 05:00 EDT 2020. Contains 337346 sequences. (Running on oeis4.)