a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n-k+1), where k = [ n/2 ], s = (natural numbers >= 3), t = (Lucas numbers).

A024877

a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n-k+1), where k = [ n/2 ], s = (natural numbers >= 3), t = (Lucas numbers).

Terms

    a(0) =9a(1) =12a(2) =37a(3) =61a(4) =133a(5) =214a(6) =413a(7) =669a(8) =1208a(9) =1954a(10) =3394a(11) =5492a(12) =9309a(13) =15062a(14) =25131a(15) =40663a(16) =67147a(17) =108646a(18) =178181a(19) =288303a(20) =470670a(21) =761560a(22) =1239524a(23) =2005592a(24) =3257761a(25) =5271168a(26) =8550753

External references