a(n) is the number of elements in the Coxeter complex of type B_n (or C_n).
A080253
a(n) is the number of elements in the Coxeter complex of type B_n (or C_n).
Terms
- a(0) =1a(1) =3a(2) =17a(3) =147a(4) =1697a(5) =24483a(6) =423857a(7) =8560947a(8) =197613377a(9) =5131725123a(10) =148070287697
External references
- oeis: A080253