Number of extreme points of the set of n X n symmetric doubly-substochastic matrices.
A006848
Number of extreme points of the set of n X n symmetric doubly-substochastic matrices.
Terms
- a(0) =1a(1) =2a(2) =5a(3) =18a(4) =75a(5) =414a(6) =2643a(7) =20550a(8) =180057a(9) =1803330a(10) =19925541a(11) =242749602a(12) =3218286195a(13) =46082917278a(14) =710817377715
External references
- oeis: A006848