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A004069 Numbers of points in nontrivial partial geometries. 0
15, 27, 40, 45, 64 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

REFERENCES

CRC Handbook of Combinatorial Designs, 1996, p. 418.

CROSSREFS

Sequence in context: A145195 A096022 A097222 * A110978 A087719 A174216

Adjacent sequences:  A004066 A004067 A004068 * A004070 A004071 A004072

KEYWORD

nonn,hard

AUTHOR

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

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Last modified February 14 05:41 EST 2012. Contains 205570 sequences.