Triangle read by rows: A219274 with rows reversed.

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =2a(5) =1a(6) =3a(7) =1a(8) =4a(9) =5a(10) =1a(11) =5a(12) =9a(13) =16a(14) =1a(15) =6a(16) =14a(17) =49a(18) =1a(19) =7a(20) =20a(21) =92a(22) =70a(23) =1a(24) =8a(25) =27a(26) =153a(27) =204a(28) =168a(29) =1