We indicate how to calculate the number of round-robin tournaments realizing a given score sequence. This is obtained by inductively calculating the number of tournaments realizing a score function. Tables up to 18 participants are obtained.
Keywords: tournament; score sequence. Thanks to Dennis Van Den Broeck for bringing this question to my attention.
Citation
Frank Plastria. Calculating the Frequency of Tournament Score Sequences[J], Journal of Combinatorial Mathematics and Combinatorial Computing, Volume 093. 273-290. DOI: .