a(n) = s(1)s(n) + s(2)s(n-1) + ... + s(k)s(n+1-k), where k = [ (n+1)/2 ], s = A000201 (lower Wythoff sequence).

A024685

a(n) = s(1)s(n) + s(2)s(n-1) + ... + s(k)s(n+1-k), where k = [ (n+1)/2 ], s = A000201 (lower Wythoff sequence).

Terms

    a(0) =1a(1) =3a(2) =13a(3) =18a(4) =42a(5) =57a(6) =106a(7) =129a(8) =212a(9) =244a(10) =362a(11) =413a(12) =583a(13) =649a(14) =866a(15) =960a(16) =1244a(17) =1356a(18) =1718a(19) =1848a(20) =2279a(21) =2447a(22) =2970a(23) =3163a(24) =3787a(25) =4006a(26) =4721a(27) =4987a(28) =5822a(29) =6117

External references