Sum of Lucas numbers and inverted Lucas numbers: a(n) = A000032(n)*A075193(n).

Terms

a(0) =3a(1) =-2a(2) =7a(3) =-3a(4) =18a(5) =-7a(6) =47a(7) =-18a(8) =123a(9) =-47a(10) =322a(11) =-123a(12) =843a(13) =-322a(14) =2207a(15) =-843a(16) =5778a(17) =-2207a(18) =15127a(19) =-5778a(20) =39603a(21) =-15127a(22) =103682a(23) =-39603a(24) =271443a(25) =-103682a(26) =710647a(27) =-271443a(28) =1860498a(29) =-710647