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.

A135879 Triangle, read by rows of A135901(n) terms, where row n+1 is generated from row n by inserting zeros at positions [(m+3)^2/4 - 2], as m=0,1,2,3,... and then taking partial sums from right to left, starting with a single 1 in row 0.

Table of values

n a(n)
0 1
1 1
2 1
3 2
4 2
5 1
6 1
7 6
8 6
9 4
10 4
11 2
12 2
13 1
14 25
15 25
16 19
17 19
18 13
19 13
20 9
21 5
22 5
23 3
24 1
25 1
26 138
27 138
28 113
29 113
30 88
31 88
32 69
33 50
34 50
35 37
36 24
37 24
38 15
39 10
40 5
41 5
42 2
43 1
44 970
45 970
46 832
47 832
48 694
49 694
50 581
51 468
52 468
53 380
54 292
55 292
56 223
57 173
58 123
59 123
60 86
61 62
62 38
63 38
64 23
65 13
66 8
67 3
68 3
69 1
70 8390

List of values

[1, 1, 1, 2, 2, 1, 1, 6, 6, 4, 4, 2, 2, 1, 25, 25, 19, 19, 13, 13, 9, 5, 5, 3, 1, 1, 138, 138, 113, 113, 88, 88, 69, 50, 50, 37, 24, 24, 15, 10, 5, 5, 2, 1, 970, 970, 832, 832, 694, 694, 581, 468, 468, 380, 292, 292, 223, 173, 123, 123, 86, 62, 38, 38, 23, 13, 8, 3, 3, 1, 8390]