Generalized Gaussian Fibonacci integers.

Terms

a(0) =0a(1) =1a(2) =2a(3) =0a(4) =-8a(5) =-16a(6) =0a(7) =64a(8) =128a(9) =0a(10) =-512a(11) =-1024a(12) =0a(13) =4096a(14) =8192a(15) =0a(16) =-32768a(17) =-65536a(18) =0a(19) =262144a(20) =524288a(21) =0a(22) =-2097152a(23) =-4194304a(24) =0a(25) =16777216a(26) =33554432a(27) =0a(28) =-134217728a(29) =-268435456