a(n) = s(1)*t(n) + s(2)*t(n-1) + ... + s(k)*t(n-k+1), where k = floor(n/2), s = A001950 (upper Wythoff sequence), t = A023533.

A025123

a(n) = s(1)*t(n) + s(2)*t(n-1) + ... + s(k)*t(n-k+1), where k = floor(n/2), s = A001950 (upper Wythoff sequence), t = A023533.

Terms

    a(0) =0a(1) =0a(2) =2a(3) =5a(4) =7a(5) =0a(6) =0a(7) =0a(8) =2a(9) =5a(10) =7a(11) =10a(12) =13a(13) =15a(14) =18a(15) =20a(16) =23a(17) =0a(18) =2a(19) =5a(20) =7a(21) =10a(22) =13a(23) =15a(24) =18a(25) =20a(26) =23a(27) =26a(28) =28a(29) =31

External references