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.

A231808 Numerator of asymptotic density of Union{H_p: p is odd prime and p <= n-th prime}, where H_p is {K*p*(p-1)/2 : K integer}.

Table of values

n a(n)
1 0
2 1
3 2
4 2
5 67
6 67
7 230
8 230
9 5317
10 70307
11 70307
12 70307
13 70307
14 70307
15 23158993
16 58560723101
17 10373287618037
18 10373287618037
19 10373287618037
20 736719736564627
21 736719736564627
22 736719736564627
23 119433196256360189
24 1970856524120023
25 1970856524120023
26 1970856524120023

List of values

[0, 1, 2, 2, 67, 67, 230, 230, 5317, 70307, 70307, 70307, 70307, 70307, 23158993, 58560723101, 10373287618037, 10373287618037, 10373287618037, 736719736564627, 736719736564627, 736719736564627, 119433196256360189, 1970856524120023, 1970856524120023, 1970856524120023]