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.

A222405 Triangle read by rows: left and right edges are A002061 (1,3,7,13,21,...), interior entries are filled in using the Pascal triangle rule.

Table of values

n a(n)
0 1
1 3
2 3
3 7
4 6
5 7
6 13
7 13
8 13
9 13
10 21
11 26
12 26
13 26
14 21
15 31
16 47
17 52
18 52
19 47
20 31
21 43
22 78
23 99
24 104
25 99
26 78
27 43
28 57
29 121
30 177
31 203
32 203
33 177
34 121
35 57
36 73
37 178
38 298
39 380
40 406
41 380
42 298
43 178
44 73
45 91
46 251
47 476
48 678
49 786
50 786
51 678
52 476
53 251
54 91
55 111
56 342
57 727
58 1154
59 1464
60 1572
61 1464
62 1154
63 727
64 342
65 111

List of values

[1, 3, 3, 7, 6, 7, 13, 13, 13, 13, 21, 26, 26, 26, 21, 31, 47, 52, 52, 47, 31, 43, 78, 99, 104, 99, 78, 43, 57, 121, 177, 203, 203, 177, 121, 57, 73, 178, 298, 380, 406, 380, 298, 178, 73, 91, 251, 476, 678, 786, 786, 678, 476, 251, 91, 111, 342, 727, 1154, 1464, 1572, 1464, 1154, 727, 342, 111]