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.

A165253 Triangle T(n,k), read by rows given by [1,0,1,0,0,0,0,0,0,...] DELTA [0,1,0,0,0,0,0,0,0,...] where DELTA is the operator defined in A084938.

Table of values

n a(n)
0 1
1 1
2 0
3 1
4 1
5 0
6 1
7 3
8 1
9 0
10 1
11 6
12 5
13 1
14 0
15 1
16 10
17 15
18 7
19 1
20 0
21 1
22 15
23 35
24 28
25 9
26 1
27 0
28 1
29 21
30 70
31 84
32 45
33 11
34 1
35 0
36 1
37 28
38 126
39 210
40 165
41 66
42 13
43 1
44 0
45 1
46 36
47 210
48 462
49 495
50 286
51 91
52 15
53 1
54 0
55 1
56 45
57 330
58 924
59 1287
60 1001
61 455
62 120
63 17
64 1
65 0
66 1
67 55
68 495
69 1716
70 3003
71 3003
72 1820
73 680

List of values

[1, 1, 0, 1, 1, 0, 1, 3, 1, 0, 1, 6, 5, 1, 0, 1, 10, 15, 7, 1, 0, 1, 15, 35, 28, 9, 1, 0, 1, 21, 70, 84, 45, 11, 1, 0, 1, 28, 126, 210, 165, 66, 13, 1, 0, 1, 36, 210, 462, 495, 286, 91, 15, 1, 0, 1, 45, 330, 924, 1287, 1001, 455, 120, 17, 1, 0, 1, 55, 495, 1716, 3003, 3003, 1820, 680]