cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A128671 Least number k > 0 such that k^p does not divide the denominator of generalized harmonic number H(k,p) nor the denominator of alternating generalized harmonic number H'(k,p), where p = prime(n).

Table of values

n a(n)
1 20
2 94556602
3 444
4 104
5 77
6 3504
7 1107
8 104
9 2948
10 903
11 77
12 1752
13 77
14 104
15 370

List of values

[20, 94556602, 444, 104, 77, 3504, 1107, 104, 2948, 903, 77, 1752, 77, 104, 370]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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