Number of n X 3 binary matrices under row and column permutations and column complementations.

Terms

a(0) =1a(1) =1a(2) =4a(3) =7a(4) =19a(5) =32a(6) =68a(7) =114a(8) =210a(9) =336a(10) =562a(11) =862a(12) =1349a(13) =1987a(14) =2950a(15) =4201a(16) =5991a(17) =8278a(18) =11422a(19) =15386a(20) =20660a(21) =27218a(22) =35718a(23) =46158a(24) =59401a(25) =75475a(26) =95494a(27) =119545a(28) =149035a(29) =184118