a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n+1-k), where k=[ (n+1)/2 ], s = (natural numbers >= 2), t = A023532.

A024308

a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n+1-k), where k=[ (n+1)/2 ], s = (natural numbers >= 2), t = A023532.

Terms

    a(0) =2a(1) =0a(2) =2a(3) =5a(4) =7a(5) =6a(6) =10a(7) =9a(8) =12a(9) =17a(10) =23a(11) =22a(12) =29a(13) =26a(14) =33a(15) =31a(16) =39a(17) =48a(18) =58a(19) =55a(20) =65a(21) =63a(22) =74a(23) =72a(24) =84a(25) =82a(26) =93a(27) =106a(28) =120a(29) =118

External references