a(n) = n*Lucas(n).

Terms

a(0) =0a(1) =1a(2) =6a(3) =12a(4) =28a(5) =55a(6) =108a(7) =203a(8) =376a(9) =684a(10) =1230a(11) =2189a(12) =3864a(13) =6773a(14) =11802a(15) =20460a(16) =35312a(17) =60707a(18) =104004a(19) =177631a(20) =302540a(21) =513996a(22) =871266a(23) =1473817a(24) =2488368a(25) =4194025a(26) =7057518a(27) =11858508a(28) =19898116a(29) =33345679