Total number of self-dual binary codes of length 2n. Totally isotropic spaces of index n in symplectic geometry of dimension 2n.
A028362
Total number of self-dual binary codes of length 2n. Totally isotropic spaces of index n in symplectic geometry of dimension 2n.
Terms
- a(0) =1a(1) =3a(2) =15a(3) =135a(4) =2295a(5) =75735a(6) =4922775a(7) =635037975a(8) =163204759575
External references
- oeis: A028362