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.

A211399 Triangle T(n,k), 0 <= k <= n, given by (0, 1, 0, 2, 0, 3, 0, 4, 0, 5, 0, ...) DELTA (1, 0, 3, 0, 5, 0, 7, 0, 9, 0, ...) where DELTA is the operator defined in A084938.

Table of values

n a(n)
0 1
1 0
2 1
3 0
4 1
5 1
6 0
7 1
8 5
9 1
10 0
11 1
12 15
13 18
14 1
15 0
16 1
17 37
18 129
19 58
20 1
21 0
22 1
23 83
24 646
25 877
26 179
27 1
28 0
29 1
30 177
31 2685
32 8030
33 5280
34 543
35 1
36 0
37 1
38 367
39 10002
40 56285
41 82610
42 29658
43 1636
44 1
45 0
46 1
47 749
48 34777
49 335162

List of values

[1, 0, 1, 0, 1, 1, 0, 1, 5, 1, 0, 1, 15, 18, 1, 0, 1, 37, 129, 58, 1, 0, 1, 83, 646, 877, 179, 1, 0, 1, 177, 2685, 8030, 5280, 543, 1, 0, 1, 367, 10002, 56285, 82610, 29658, 1636, 1, 0, 1, 749, 34777, 335162]