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A098804 Number of point-transitive configurations of type (n_3). 3
0, 0, 0, 0, 0, 0, 1, 1, 2, 2, 1, 4, 2, 3, 5, 6, 2, 9 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,9

REFERENCES

A. Betten, G. Brinkmann and T. Pisanski, Counting symmetric configurations v_3, Discrete Appl. Math., 99 (2000), 331-338.

LINKS

Table of n, a(n) for n=1..18.

CROSSREFS

Cf. A001403, A023994.

Sequence in context: A146478 A289500 A325276 * A191320 A180228 A212320

Adjacent sequences:  A098801 A098802 A098803 * A098805 A098806 A098807

KEYWORD

nonn,hard

AUTHOR

N. J. A. Sloane, Nov 05 2004

STATUS

approved

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Last modified October 19 04:40 EDT 2019. Contains 328211 sequences. (Running on oeis4.)