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.

A074810 Numbers k such that the number of primes between k and 2k (inclusive) = largest prime factor of k.

Table of values

n a(n)
1 1
2 2
3 4
4 8
5 9
6 28
7 65
8 114
9 174
10 186
11 246
12 623
13 1784
14 1832
15 1912
16 5121
17 13810
18 14090
19 39413
20 40403
21 808822
22 809858
23 810026
24 2201505
25 2202735
26 6047408
27 6048656
28 16463939
29 16467271
30 16472371
31 121482371
32 121495747
33 330358060
34 898100679

List of values

[1, 2, 4, 8, 9, 28, 65, 114, 174, 186, 246, 623, 1784, 1832, 1912, 5121, 13810, 14090, 39413, 40403, 808822, 809858, 810026, 2201505, 2202735, 6047408, 6048656, 16463939, 16467271, 16472371, 121482371, 121495747, 330358060, 898100679]