Triangular array read by rows. T(n,k) is the number of n X n matrices T over GF(2) such that there are exactly 2^k vectors v in GF(2)^n with Tv=v, n>=0, 0<=k<=n.
A379105
Triangular array read by rows. T(n,k) is the number of n X n matrices T over GF(2) such that there are exactly 2^k vectors v in GF(2)^n with Tv=v, n>=0, 0<=k<=n.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =6a(4) =9a(5) =1a(6) =168a(7) =294a(8) =49a(9) =1a(10) =20160a(11) =37800a(12) =7350a(13) =225a(14) =1a(15) =9999360a(16) =19373760a(17) =4036200a(18) =144150a(19) =961a(20) =1a(21) =20158709760a(22) =39687459840a(23) =8543828160a(24) =326932200a(25) =2542806a(26) =3969a(27) =1a(32) =23435953128a(33) =42677334
External references
- oeis: A379105