A282746 Number of 2-(n,3,lambda_min) designs.

1, 1, 3077244, 1, 960, 242995846, 2, 80, 11084874829

Offset

6,3

Comments

The corresponding values of lambda_min are 2, 1, 6, 1, 2, 2, 1, 1, 1.

Links

Table of n, a(n) for n=6..14.

Gholamreza B. Khosrovshahi and Behruz Tayfeh-Rezaie, Classification of simple 2-(11, 3, 3) designs, Discrete Mathematics 309.3 (2009): 515-520.

Crossrefs

Sequence in context: A183696 A104963 A190462 * A212854 A186551 A172606

Adjacent sequences: A282743 A282744 A282745 * A282747 A282748 A282749

Keyword

nonn,more

Author

N. J. A. Sloane, Mar 05 2017

Status

approved