1,1

CRC Handbook of Combinatorial Designs, 1996, p. 315. (But beware errors!)

Table of n, a(n) for n=1..6.

J. B. Shearer, Difference Triangle Sets: Known optimal solutions.

J. B. Shearer, Difference Triangle Sets: Discoverers

A row or column of array in A234943.

Sequence in context: A008074 A008190 A008193 * A301048 A009904 A008215

Adjacent sequences: A010894 A010895 A010896 * A010898 A010899 A010900

nonn,hard

N. J. A. Sloane.

Corrected from Shearer's tables. - N. J. A. Sloane, Jan 08 2014

approved