a(n) = s(1)*t(n) + s(2)*t(n-1) + ... + s(k)*t(n-k+1), where k = floor(n/2), s = A000032, t = A023533.

A025096

a(n) = s(1)*t(n) + s(2)*t(n-1) + ... + s(k)*t(n-k+1), where k = floor(n/2), s = A000032, t = A023533.

Terms

    a(0) =0a(1) =0a(2) =1a(3) =3a(4) =4a(5) =0a(6) =0a(7) =0a(8) =1a(9) =3a(10) =4a(11) =7a(12) =11a(13) =18a(14) =29a(15) =47a(16) =76a(17) =0a(18) =1a(19) =3a(20) =4a(21) =7a(22) =11a(23) =18a(24) =29a(25) =47a(26) =76a(27) =123a(28) =199a(29) =322

External references