a(n) = s(1)*t(n) + s(2)*t(n-1) + ... + s(k)*t(n+1-k), where k = floor((n+1)/2), s = (natural numbers >= 3), t = A023532.

A024314

a(n) = s(1)*t(n) + s(2)*t(n-1) + ... + s(k)*t(n+1-k), where k = floor((n+1)/2), s = (natural numbers >= 3), t = A023532.

Terms

    a(0) =3a(1) =9a(2) =24a(3) =37a(4) =81a(5) =133a(6) =256a(7) =413a(8) =746a(9) =1208a(10) =2098a(11) =3394a(12) =5753a(13) =9309a(14) =15532a(15) =25131a(16) =41499a(17) =67147a(18) =110122a(19) =178181a(20) =290890a(21) =470670a(22) =766068a(23) =1239524a(24) =2013407a(25) =3257761a(26) =5284656a(27) =8550753

External references