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.

A154280 List of pairs (a(n),b(n)): f(n) = A004001(n); a(n) = f(n) + a(n-1); b(n) = f(n)*b(n-1).

Table of values

n a(n)
0 0
1 1
2 1
3 1
4 2
5 1
6 4
7 2
8 6
9 4
10 9
11 12
12 13
13 48
14 17
15 192
16 21
17 768
18 26
19 3840
20 32
21 23040
22 39
23 161280
24 46
25 1128960
26 54
27 9031680
28 62
29 72253440
30 70
31 578027520
32 78
33 4624220160
34 87
35 41617981440
36 97
37 416179814400
38 108
39 4577977958400
40 120
41 54935735500800
42 132

List of values

[0, 1, 1, 1, 2, 1, 4, 2, 6, 4, 9, 12, 13, 48, 17, 192, 21, 768, 26, 3840, 32, 23040, 39, 161280, 46, 1128960, 54, 9031680, 62, 72253440, 70, 578027520, 78, 4624220160, 87, 41617981440, 97, 416179814400, 108, 4577977958400, 120, 54935735500800, 132]