a(n) = s(1)*t(n) + s(2)*t(n-1) + ... + s(k)*t(n-k+1), where k = floor(n/2), s = A000027, t = A023533.
A024865
a(n) = s(1)*t(n) + s(2)*t(n-1) + ... + s(k)*t(n-k+1), where k = floor(n/2), s = A000027, t = A023533.
Terms
- a(0) =0a(1) =0a(2) =1a(3) =2a(4) =3a(5) =0a(6) =0a(7) =0a(8) =1a(9) =2a(10) =3a(11) =4a(12) =5a(13) =6a(14) =7a(15) =8a(16) =9a(17) =0a(18) =1a(19) =2a(20) =3a(21) =4a(22) =5a(23) =6a(24) =7a(25) =8a(26) =9a(27) =10a(28) =11a(29) =12
External references
- oeis: A024865