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.

A370131 a(n) = A068346(A276086(n)), where A068346 is the second arithmetic derivative, and A276086 is the primorial base exp-function.

Table of values

n a(n)
0 0
1 0
2 0
3 1
4 5
5 10
6 0
7 1
8 12
9 1
10 16
11 44
12 7
13 39
14 16
15 42
16 608
17 391
18 55
19 135
20 365
21 455
22 1120
23 2990
24 800
25 1100
26 1400
27 5425
28 12575
29 21025
30 0
31 6
32 7
33 1
34 20
35 103
36 16
37 1
38 1
39 32
40 271
41 320
42 24
43 78
44 572
45 459
46 1031
47 2887
48 635
49 1670
50 1155
51 3335
52 19540
53 22130
54 4225
55 7700
56 18675
57 28100
58 68900
59 155425
60 9
61 18
62 20
63 54
64 704
65 631
66 24
67 251

List of values

[0, 0, 0, 1, 5, 10, 0, 1, 12, 1, 16, 44, 7, 39, 16, 42, 608, 391, 55, 135, 365, 455, 1120, 2990, 800, 1100, 1400, 5425, 12575, 21025, 0, 6, 7, 1, 20, 103, 16, 1, 1, 32, 271, 320, 24, 78, 572, 459, 1031, 2887, 635, 1670, 1155, 3335, 19540, 22130, 4225, 7700, 18675, 28100, 68900, 155425, 9, 18, 20, 54, 704, 631, 24, 251]