Triangle read by rows, generated from A001263.

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =2a(5) =1a(6) =1a(7) =3a(8) =5a(9) =1a(10) =1a(11) =4a(12) =12a(13) =14a(14) =1a(15) =1a(16) =5a(17) =22a(18) =57a(19) =42a(20) =1a(21) =1a(22) =6a(23) =35a(24) =148a(25) =303a(26) =132a(27) =1a(28) =1a(29) =7