menage_problem (239B)
1 # Menage problem 2 3 https://en.m.wikipedia.org/wiki/M%C3%A9nage_problem 4 5 Seating male-and-female couples at a table so that men and women alternate and no one sits next to their partner 6 7 Up: [combinatorics] 8 9 See also: [heteronormative_math]