a(n) = floor(Fibonacci(n)/6).

Terms

a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =1a(7) =2a(8) =3a(9) =5a(10) =9a(11) =14a(12) =24a(13) =38a(14) =62a(15) =101a(16) =164a(17) =266a(18) =430a(19) =696a(20) =1127a(21) =1824a(22) =2951a(23) =4776a(24) =7728a(25) =12504a(26) =20232a(27) =32736a(28) =52968a(29) =85704