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 = (composite numbers).

A024860

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 = (composite numbers).

Terms

    a(0) =6a(1) =8a(2) =25a(3) =28a(4) =59a(5) =68a(6) =119a(7) =136a(8) =211a(9) =234a(10) =338a(11) =366a(12) =502a(13) =543a(14) =715a(15) =770a(16) =981a(17) =1042a(18) =1297a(19) =1365a(20) =1667a(21) =1752a(22) =2104a(23) =2208a(24) =2615a(25) =2726a(26) =3191a(27) =3325a(28) =3854a(29) =4013

External references