Triangular array A065547 unsigned and transposed.

Terms

a(0) =1a(1) =1a(2) =0a(3) =1a(4) =1a(5) =0a(6) =1a(7) =3a(8) =3a(9) =0a(10) =1a(11) =6a(12) =17a(13) =17a(14) =0a(15) =1a(16) =10a(17) =55a(18) =155a(19) =155a(20) =0a(21) =1a(22) =15a(23) =135a(24) =736a(25) =2073a(26) =2073a(27) =0a(28) =1a(29) =21