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.

A261250 One half of the even entries of A033317.

Table of values

n a(n)
1 1
2 2
3 1
4 3
5 1
6 90
7 2
8 4
9 2
10 1
11 6
12 21
13 5
14 12
15 910
16 1
17 2
18 3
19 6
20 3
21 2
22 160
23 1
24 15
25 12
26 1794
27 7
28 45
29 4550
30 33
31 6
32 1
33 10
34 1287
35 2
36 113076990
37 4
38 8
39 4
40 2
41 468
42 15
43 1
44 133500
45 215
46 3315
47 20
48 3
49 9
50 3
51 15498
52 561
53 26500
54 1
55 60
56 630
57 110532
58 2
59 3188676
60 5
61 10
62 5
63 2
64 1557945
65 65
66 7570212227550
67 1
68 14
69 6
70 56648
71 48
72 455
73 30
74 14127

List of values

[1, 2, 1, 3, 1, 90, 2, 4, 2, 1, 6, 21, 5, 12, 910, 1, 2, 3, 6, 3, 2, 160, 1, 15, 12, 1794, 7, 45, 4550, 33, 6, 1, 10, 1287, 2, 113076990, 4, 8, 4, 2, 468, 15, 1, 133500, 215, 3315, 20, 3, 9, 3, 15498, 561, 26500, 1, 60, 630, 110532, 2, 3188676, 5, 10, 5, 2, 1557945, 65, 7570212227550, 1, 14, 6, 56648, 48, 455, 30, 14127]