A057495 Number of association schemes of order n.

1, 1, 2, 4, 3, 8, 4, 21, 12, 13, 4, 59, 6, 16, 25, 222, 5, 95, 7, 95, 32, 16, 22, 750, 45, 34, 502, 185

Offset

1,3

Links

Table of n, a(n) for n=1..28.

Akihide Hanaki and Izumi Miyamoto, Classification of primitive association schemes of order up to 22, Kyushu J. Math., 54 (2000), 81-86.

Akihide Hanaki and Izumi Miyamoto, Classification of association schemes of small order, Discrete Math. 264 (2003), 75-80.

A. Hanaki and I. Miyamoto, Classification of association schemes with small vertices

Mitsugu Hirasaka and Yuji Suga The classification of association schemes with 13 or 15 points, RIMS Kôkyûroku, 962 (1996) 71-80.

Y. Suga, Association schemes with up to 15 vertices

Crossrefs

Cf. A057498, A057499, A057560.

Sequence in context: A329486 A051145 A288966 * A321366 A180246 A329146

Adjacent sequences: A057492 A057493 A057494 * A057496 A057497 A057498

Keyword

nonn,nice,more

Author

N. J. A. Sloane, Oct 01 2000

Status

approved