The number \( g_3^{(4)}(v) \) represents the minimum cardinality of a pairwise balanced design on \( v \) elements in which the largest block size is four and every pair occurs exactly three times. We give a survey of the results for this quantity.
Citation
R.G. Stanton. The Covering Numbers \(g_{3}^{(4)}(v)\)[J], Journal of Combinatorial Mathematics and Combinatorial Computing, Volume 048. 107-114. DOI: .