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.

A118340 Pendular triangle, read by rows, where row n is formed from row n-1 by the recurrence: if n > 2k, T(n,k) = T(n,n-k) + T(n-1,k), else T(n,k) = T(n,n-1-k) + T(n-1,k), for n>=k>0, with T(n,0) = 1 and T(n,n) = 0^n.

Table of values

n a(n)
0 1
1 1
2 0
3 1
4 1
5 0
6 1
7 2
8 1
9 0
10 1
11 3
12 4
13 1
14 0
15 1
16 4
17 9
18 5
19 1
20 0
21 1
22 5
23 15
24 20
25 6
26 1
27 0
28 1
29 6
30 22
31 48
32 28
33 7
34 1
35 0
36 1
37 7
38 30
39 85
40 113
41 37
42 8
43 1
44 0
45 1
46 8
47 39
48 132
49 282
50 169
51 47
52 9
53 1
54 0
55 1
56 9
57 49
58 190
59 519
60 688
61 237
62 58
63 10
64 1
65 0
66 1
67 10
68 60
69 260
70 837
71 1762
72 1074
73 318
74 70
75 11
76 1
77 0

List of values

[1, 1, 0, 1, 1, 0, 1, 2, 1, 0, 1, 3, 4, 1, 0, 1, 4, 9, 5, 1, 0, 1, 5, 15, 20, 6, 1, 0, 1, 6, 22, 48, 28, 7, 1, 0, 1, 7, 30, 85, 113, 37, 8, 1, 0, 1, 8, 39, 132, 282, 169, 47, 9, 1, 0, 1, 9, 49, 190, 519, 688, 237, 58, 10, 1, 0, 1, 10, 60, 260, 837, 1762, 1074, 318, 70, 11, 1, 0]