Convolution of Lucas numbers and A000201.

Terms

a(0) =1a(1) =6a(2) =17a(3) =37a(4) =74a(5) =136a(6) =239a(7) =409a(8) =686a(9) =1139a(10) =1874a(11) =3066a(12) =4999a(13) =8129a(14) =13196a(15) =21398a(16) =34671a(17) =56152a(18) =90911a(19) =147155a(20) =238163a(21) =385419a(22) =623689a(23) =1009220a(24) =1633025a(25) =2642367a(26) =4275519a(27) =6918017