The array in A059219 read by antidiagonals in the direction in which it was constructed.

Terms

a(0) =1a(1) =0a(2) =1a(3) =0a(4) =1a(5) =2a(6) =0a(7) =2a(8) =3a(9) =5a(10) =0a(11) =5a(12) =8a(13) =12a(14) =15a(15) =0a(16) =15a(17) =27a(18) =39a(19) =48a(20) =55a(21) =0a(22) =55a(23) =103a(24) =152a(25) =190a(26) =221a(27) =239a(28) =0a(29) =239