a(n) = b(n) + d(n), where b(n) = (n-th Fibonacci number > 2 ) and d(n) = (n-th number that is 1, 2, or 3, or is not a Lucas number).

A023502

a(n) = b(n) + d(n), where b(n) = (n-th Fibonacci number > 2 ) and d(n) = (n-th number that is 1, 2, or 3, or is not a Lucas number).

Terms

    a(0) =4a(1) =7a(2) =11a(3) =18a(4) =27a(5) =42a(6) =64a(7) =99a(8) =156a(9) =246a(10) =391a(11) =625a(12) =1003a(13) =1614a(14) =2603a(15) =4201a(16) =6786a(17) =10968a(18) =17734a(19) =28681a(20) =46393a(21) =75051a(22) =121420a(23) =196446a(24) =317841a(25) =514260a(26) =832072a(27) =1346302a(28) =2178343a(29) =3524613

External references