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

A025070

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

Terms

    a(0) =6a(1) =8a(2) =9a(3) =10a(4) =21a(5) =24a(6) =37a(7) =42a(8) =47a(9) =51a(10) =69a(11) =75a(12) =96a(13) =102a(14) =126a(15) =135a(16) =142a(17) =150a(18) =178a(19) =187a(20) =217a(21) =227a(22) =259a(23) =272a(24) =307a(25) =319a(26) =332a(27) =345a(28) =385a(29) =401

External references