T(n,m) is the number of m-dimensional isotropic subspaces of a 2n-dimensional symplectic space over Z/2, n >= 0 and 0 <= m <= n.
A368493
T(n,m) is the number of m-dimensional isotropic subspaces of a 2n-dimensional symplectic space over Z/2, n >= 0 and 0 <= m <= n.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =1a(4) =15a(5) =15a(6) =1a(7) =63a(8) =315a(9) =135a(10) =1a(11) =255a(12) =5355a(13) =11475a(14) =2295a(15) =1a(16) =1023a(17) =86955a(18) =782595a(19) =782595a(20) =75735a(21) =1a(22) =4095a(23) =1396395a(24) =50868675a(25) =213648435a(26) =103378275a(27) =4922775a(28) =1a(29) =16383
External references
- oeis: A368493