Triangle [1,1,1,0,0,0,...] DELTA [1,0,0,0,...] with Deléham DELTA defined in A084938.

Terms

a(0) =1a(1) =1a(2) =1a(3) =2a(4) =3a(5) =1a(6) =5a(7) =9a(8) =5a(9) =1a(10) =13a(11) =27a(12) =20a(13) =7a(14) =1a(15) =34a(16) =80a(17) =73a(18) =35a(19) =9a(20) =1a(21) =89a(22) =234a(23) =252a(24) =151a(25) =54a(26) =11a(27) =1a(28) =233a(29) =677