A124120 Number of nonisomorphic Steiner quadruple systems (SQS's) S(3,4,n) on n points.

0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 4, 0, 1054163

Offset

1,14

Links

Table of n, a(n) for n=1..16.

Index entries for sequences related to Steiner systems

Example

There are 4 nonisomorphic SQS's on 14 points.

Crossrefs

A051390 is the official version of this sequence and has all the references etc.

Cf. A124119, A030129, A001201, A030128, A051390.

Sequence in context: A336327 A327113 A051390 * A365952 A324803 A320742

Adjacent sequences: A124117 A124118 A124119 * A124121 A124122 A124123

Keyword

nonn,hard

Author

N. J. A. Sloane, Nov 30 2006

Status

approved