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.

A380403 Number of integers k that are neither squarefree nor prime powers (in A126706) and that do not exceed primorial A002110(n).

Table of values

n a(n)
0 0
1 0
2 0
3 5
4 67
5 871
6 11693
7 199976
8 3802411
9 87466676
10 2536583089
11 78634293907
12 2909470106300
13 119288281458176
14 5129396144497507
15 241081619059363357
16 12777325812023481231
17 753862222923258499554

List of values

[0, 0, 0, 5, 67, 871, 11693, 199976, 3802411, 87466676, 2536583089, 78634293907, 2909470106300, 119288281458176, 5129396144497507, 241081619059363357, 12777325812023481231, 753862222923258499554]

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

Content is available under The OEIS End-User License Agreement.