A124120 - OEIS

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A124120

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

2

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

(list; graph; refs; listen; history; text; internal format)

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