a(n) = s(1)*t(n) + s(2)*t(n-1) + ... + s(k)*t(n-k+1), where k = floor(n/2), s = A000201 (lower Wythoff sequence), t = A023533.

A025120

a(n) = s(1)*t(n) + s(2)*t(n-1) + ... + s(k)*t(n-k+1), where k = floor(n/2), s = A000201 (lower Wythoff sequence), 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) =6a(12) =8a(13) =9a(14) =11a(15) =12a(16) =14a(17) =0a(18) =1a(19) =3a(20) =4a(21) =6a(22) =8a(23) =9a(24) =11a(25) =12a(26) =14a(27) =16a(28) =17a(29) =19

External references