Convolution of Lucas numbers and composite numbers.

Terms

a(0) =4a(1) =18a(2) =42a(3) =85a(4) =155a(5) =272a(6) =465a(7) =780a(8) =1291a(9) =2121a(10) =3468a(11) =5650a(12) =9182a(13) =14900a(14) =24155a(15) =39131a(16) =63365a(17) =102578a(18) =166029a(19) =268699a(20) =434825a(21) =703624a(22) =1138552a(23) =1842282a(24) =2980944a(25) =4823341a(26) =7804403