a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n+1-k), where k = [ (n+1)/2 ], s = (Lucas numbers), t = (composite numbers).

A024471

a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n+1-k), where k = [ (n+1)/2 ], s = (Lucas numbers), t = (composite numbers).

Terms

    a(0) =4a(1) =6a(2) =26a(3) =33a(4) =69a(5) =78a(6) =153a(7) =175a(8) =311a(9) =356a(10) =613a(11) =682a(12) =1143a(13) =1235a(14) =2045a(15) =2216a(16) =3635a(17) =3965a(18) =6470a(19) =6945a(20) =11298a(21) =11903a(22) =19324a(23) =20392a(24) =33064a(25) =35025a(26) =56745a(27) =59156a(28) =95797a(29) =99911

External references