Diagonal of the triangle A354490.

Terms

a(0) =0a(1) =0a(2) =0a(3) =0a(4) =4a(5) =0a(6) =6a(7) =8a(8) =18a(9) =0a(10) =62a(11) =0a(12) =48a(13) =88a(14) =77a(15) =0a(16) =203a(17) =0a(18) =265a(19) =209a(20) =140a(21) =0a(22) =628a(23) =118a(24) =199a(25) =301a(26) =614a(27) =0a(28) =1285a(29) =0