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

A024874

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

Terms

    a(0) =4a(1) =6a(2) =19a(3) =31a(4) =70a(5) =113a(6) =223a(7) =361a(8) =662a(9) =1071a(10) =1880a(11) =3042a(12) =5194a(13) =8404a(14) =14093a(15) =22803a(16) =37786a(17) =61139a(18) =100509a(19) =162627a(20) =265932a(21) =430287a(22) =701120a(23) =1134436a(24) =1844096a(25) =2983810a(26) =4842711a(27) =7835671a(28) =12703934a(29) =20555397

External references