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.

0, 1, 3, 6, 11, 18, 25, 36, 50, 64, 81, 104, 127, 153, 182, 215, 251, 292, 336, 385, 438, 487, 549, 616, 687, 753, 835, 910, 1002, 1087, 1190, 1285, 1400, 1505, 1632, 1748, 1870, 1997, 2148, 2287, 2431, 2582, 2759, 2922, 3091

Offset

4,3

Links

Table of n, a(n) for n=4..48.

Formula

a(n) = floor(A025203(n) / A025201(n)). - Sean A. Irvine, Aug 18 2019

Crossrefs

Sequence in context: A084576 A024667 A363056 * A340648 A140126 A140235

Adjacent sequences: A025207 A025208 A025209 * A025211 A025212 A025213

Keyword

nonn

Author

Clark Kimberling

Extensions

Title corrected and more terms from Sean A. Irvine, Aug 18 2019

Status

approved