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.

A163840 Triangle interpolating the binomial transform of the swinging factorial (A163865) with the swinging factorial (A056040).

Table of values

n a(n)
0 1
1 2
2 1
3 5
4 3
5 2
6 16
7 11
8 8
9 6
10 47
11 31
12 20
13 12
14 6
15 146
16 99
17 68
18 48
19 36
20 30
21 447
22 301
23 202
24 134
25 86
26 50
27 20
28 1380
29 933
30 632
31 430
32 296
33 210
34 160
35 140
36 4251
37 2871
38 1938
39 1306
40 876
41 580
42 370
43 210
44 70
45 13102
46 8851
47 5980
48 4042
49 2736
50 1860
51 1280
52 910
53 700
54 630

List of values

[1, 2, 1, 5, 3, 2, 16, 11, 8, 6, 47, 31, 20, 12, 6, 146, 99, 68, 48, 36, 30, 447, 301, 202, 134, 86, 50, 20, 1380, 933, 632, 430, 296, 210, 160, 140, 4251, 2871, 1938, 1306, 876, 580, 370, 210, 70, 13102, 8851, 5980, 4042, 2736, 1860, 1280, 910, 700, 630]