Column 4 of triangle A091602.

Terms

a(0) =1a(1) =0a(2) =1a(3) =1a(4) =3a(5) =3a(6) =5a(7) =6a(8) =10a(9) =12a(10) =18a(11) =22a(12) =32a(13) =39a(14) =54a(15) =67a(16) =89a(17) =110a(18) =144a(19) =177a(20) =228a(21) =280a(22) =354a(23) =433a(24) =542a(25) =659a(26) =816a(27) =989a(28) =1214a(29) =1464