Total number of distinct Hadamard matrices of order n.

Terms

a(0) =2a(1) =8a(2) =0a(3) =768a(4) =0a(5) =0a(6) =0a(7) =4954521600a(8) =0a(9) =0a(10) =0a(12) =0a(13) =0a(14) =0a(16) =0a(17) =0a(18) =0a(20) =0a(21) =0a(22) =0a(24) =0a(25) =0a(26) =0a(28) =0a(29) =0a(30) =0