Number of 3 X n binary matrices up to row and column permutations.

Terms

a(0) =1a(1) =4a(2) =13a(3) =36a(4) =87a(5) =190a(6) =386a(7) =734a(8) =1324a(9) =2284a(10) =3790a(11) =6080a(12) =9473a(13) =14378a(14) =21323a(15) =30974a(16) =44159a(17) =61898a(18) =85440a(19) =116286a(20) =156240a(21) =207446a(22) =272432a(23) =354162a(24) =456097a(25) =582238a(26) =737205a(27) =926298a(28) =1155567a(29) =1431892