A124119 Number of nonisomorphic Steiner quadruple systems (SQS's) S(3,4,v) on v = 6n+2 or 6n+4 points.

1, 1, 4, 1054163

Offset: 1

Author

N. J. A. Sloane, Nov 30 2006

Keywords

• nonn
• hard
• more

Comments

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

Examples

			There are 4 nonisomorphic SQS's on 14 points.
		

Links

• Eric Weisstein's World of Mathematics, Steiner Quadruple System
• Index entries for sequences related to Steiner systems

Crossrefs

Cf. A124120, A030129, A001201, A030128, A051390.