a(n) = floor(floor(S3)/floor(S1)); where S3 and S1 are, respectively, the third and first elementary symmetric functions of {log(k)}, k = 1,2,...,n.

A025210

a(n) = floor(floor(S3)/floor(S1)); where S3 and S1 are, respectively, the third and first elementary symmetric functions of {log(k)}, k = 1,2,...,n.

Terms

    a(0) =0a(1) =1a(2) =3a(3) =6a(4) =11a(5) =18a(6) =25a(7) =36a(8) =50a(9) =64a(10) =81a(11) =104a(12) =127a(13) =153a(14) =182a(15) =215a(16) =251a(17) =292a(18) =336a(19) =385a(20) =438a(21) =487a(22) =549a(23) =616a(24) =687a(25) =753a(26) =835a(27) =910a(28) =1002a(29) =1087

External references