Number of inequivalent 2*n X 6 binary arrays with row sums 3 and column sums n up to row and column permutations.

A377003

Number of inequivalent 2*n X 6 binary arrays with row sums 3 and column sums n up to row and column permutations.

Terms

    a(0) =1a(1) =1a(2) =3a(3) =7a(4) =19a(5) =46a(6) =132a(7) =345a(8) =951a(9) =2457a(10) =6198a(11) =14816a(12) =34126a(13) =75057a(14) =159176a(15) =325021a(16) =642473a(17) =1230711a(18) =2292826a(19) =4160165a(20) =7370620a(21) =12768904a(22) =21671722a(23) =36080204a(24) =59009291a(25) =94910598a(26) =150300578a(27) =234560237a(28) =361082376a(29) =548722631

External references