Triangle related to generalized Euler numbers of type 2^n (A005799).

Terms

a(0) =1a(1) =0a(2) =1a(3) =0a(4) =1a(5) =1a(6) =0a(7) =1a(8) =8a(9) =1a(10) =0a(11) =1a(12) =51a(13) =51a(14) =1a(15) =0a(16) =1a(17) =310a(18) =1194a(19) =310a(20) =1a(21) =0a(22) =1a(23) =1865a(24) =21790a(25) =21790a(26) =1865a(27) =1a(28) =0a(29) =1