a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n-k+1), where k = [ n/2 ], s = (composite numbers), t = (F(2), F(3), F(4), ...).

A025103

a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n-k+1), where k = [ n/2 ], s = (composite numbers), t = (F(2), F(3), F(4), ...).

Terms

    a(0) =8a(1) =12a(2) =38a(3) =62a(4) =140a(5) =226a(6) =438a(7) =709a(8) =1277a(9) =2066a(10) =3595a(11) =5817a(12) =9888a(13) =15999a(14) =26712a(15) =43221a(16) =71357a(17) =115458a(18) =189407a(19) =306467a(20) =500534a(21) =809881a(22) =1318332a(23) =2133106a(24) =3464858a(25) =5606258a(26) =9094804

External references