a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n-k+1), where k = [ n/2 ], s = (natural numbers), t = A023532.
A024856
a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n-k+1), where k = [ n/2 ], s = (natural numbers), t = A023532.
Terms
- a(0) =0a(1) =1a(2) =3a(3) =2a(4) =4a(5) =3a(6) =6a(7) =9a(8) =13a(9) =12a(10) =17a(11) =16a(12) =21a(13) =19a(14) =25a(15) =32a(16) =40a(17) =39a(18) =47a(19) =45a(20) =54a(21) =52a(22) =62a(23) =60a(24) =71a(25) =82a(26) =94a(27) =92a(28) =105a(29) =103
External references
- oeis: A024856