Convolution of L(n+1) := A000204(n+1) (Lucas), n>=0, with L(n+6), n>=0.

Terms

a(0) =18a(1) =83a(2) =206a(3) =459a(4) =940a(5) =1844a(6) =3504a(7) =6513a(8) =11902a(9) =21465a(10) =38302a(11) =67752a(12) =118974a(13) =207631a(14) =360430a(15) =622791a(16) =1071776a(17) =1837852a(18) =3141468a(19) =5354445a(20) =9102878a(21) =15439413a(22) =26131346a(23) =44141904a(24) =74433450a(25) =125306699