Triangle T(n,k) of asymmetric n X n binary matrices with k=0..n^2 ones under action of dihedral group of the square D_4.
A054645
Triangle T(n,k) of asymmetric n X n binary matrices with k=0..n^2 ones under action of dihedral group of the square D_4.
Terms
- a(0) =0a(1) =0a(2) =2a(3) =6a(4) =10a(5) =10a(6) =6a(7) =2a(8) =0a(9) =0a(10) =0a(11) =1a(12) =10a(13) =63a(14) =207a(15) =525a(16) =954a(17) =1395a(18) =1550a(19) =1395a(20) =954a(21) =525a(22) =207a(23) =63a(24) =10a(25) =1a(26) =0a(27) =0a(28) =1a(29) =28
External references
- oeis: A054645