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.

A247644 Triangle formed from the odd-numbered rows of A088855.

Table of values

n a(n)
1 1
2 1
3 1
4 1
5 1
6 2
7 4
8 2
9 1
10 1
11 3
12 9
13 9
14 9
15 3
16 1
17 1
18 4
19 16
20 24
21 36
22 24
23 16
24 4
25 1
26 1
27 5
28 25
29 50
30 100
31 100
32 100
33 50
34 25
35 5
36 1
37 1
38 6
39 36
40 90
41 225
42 300
43 400
44 300
45 225
46 90
47 36
48 6
49 1
50 1
51 7
52 49
53 147
54 441
55 735
56 1225
57 1225
58 1225
59 735
60 441
61 147
62 49
63 7
64 1
65 1
66 8
67 64
68 224
69 784
70 1568
71 3136
72 3920
73 4900
74 3920
75 3136
76 1568
77 784
78 224
79 64
80 8
81 1

List of values

[1, 1, 1, 1, 1, 2, 4, 2, 1, 1, 3, 9, 9, 9, 3, 1, 1, 4, 16, 24, 36, 24, 16, 4, 1, 1, 5, 25, 50, 100, 100, 100, 50, 25, 5, 1, 1, 6, 36, 90, 225, 300, 400, 300, 225, 90, 36, 6, 1, 1, 7, 49, 147, 441, 735, 1225, 1225, 1225, 735, 441, 147, 49, 7, 1, 1, 8, 64, 224, 784, 1568, 3136, 3920, 4900, 3920, 3136, 1568, 784, 224, 64, 8, 1]