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.

A344783 Numbers k such that 1 + Sum_{i=1..k} floor(k/i)*(2^i) is a prime number.

Table of values

n a(n)
1 1
2 3
3 4
4 7
5 18
6 25
7 26
8 30
9 40
10 50
11 95
12 150
13 348
14 694
15 1052
16 1222
17 1808
18 2567
19 4917
20 5399
21 7438
22 10720
23 12152
24 30412
25 38313
26 53620
27 121419
28 123523

List of values

[1, 3, 4, 7, 18, 25, 26, 30, 40, 50, 95, 150, 348, 694, 1052, 1222, 1808, 2567, 4917, 5399, 7438, 10720, 12152, 30412, 38313, 53620, 121419, 123523]