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

A025091

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

Terms

    a(0) =6a(1) =8a(2) =33a(3) =37a(4) =78a(5) =90a(6) =175a(7) =201a(8) =356a(9) =397a(10) =682a(11) =737a(12) =1235a(13) =1340a(14) =2216a(15) =2419a(16) =3965a(17) =4256a(18) =6945a(19) =7318a(20) =11903a(21) =12562a(22) =20392a(23) =21602a(24) =35025a(25) =36513a(26) =59156a(27) =61697a(28) =99911a(29) =104362

External references