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

A025117

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

Terms

    a(0) =3a(1) =5a(2) =22a(3) =32a(4) =81a(5) =111a(6) =212a(7) =256a(8) =429a(9) =519a(10) =794a(11) =926a(12) =1329a(13) =1537a(14) =2092a(15) =2368a(16) =3109a(17) =3427a(18) =4376a(19) =4818a(20) =6001a(21) =6495a(22) =7938a(23) =8542a(24) =10287a(25) =11075a(26) =13148a(27) =14074a(28) =16491a(29) =17505

External references