a(n) = L(n+1) + c(n) where L(k) = k-th Lucas number and c(n) is n-th number that is 1 or not a Lucas number.

A022802

a(n) = L(n+1) + c(n) where L(k) = k-th Lucas number and c(n) is n-th number that is 1 or not a Lucas number.

Terms

    a(0) =4a(1) =6a(2) =12a(3) =17a(4) =26a(5) =38a(6) =57a(7) =88a(8) =136a(9) =213a(10) =337a(11) =537a(12) =860a(13) =1383a(14) =2227a(15) =3592a(16) =5800a(17) =9372a(18) =15151a(19) =24501a(20) =39629a(21) =64106a(22) =103710a(23) =167791a(24) =271474a(25) =439236a(26) =710680a(27) =1149885a(28) =1860533a(29) =3010385

External references