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.

A153520 Triangle T(n,k) = T(n-1, k) + T(n-1, k-1) + 7*T(n-2, k-1), read by rows.

Table of values

n a(n)
1 2
2 7
3 7
4 2
5 94
6 2
7 2
8 341
9 341
10 2
11 2
12 357
13 1340
14 357
15 2
16 2
17 373
18 4084
19 4084
20 373
21 2
22 2
23 389
24 6956
25 17548
26 6956
27 389
28 2
29 2
30 405
31 9956
32 53092
33 53092
34 9956
35 405
36 2
37 2
38 421
39 13084
40 111740
41 229020
42 111740
43 13084
44 421
45 2
46 2
47 437
48 16340
49 194516
50 712404
51 712404
52 194516
53 16340
54 437
55 2

List of values

[2, 7, 7, 2, 94, 2, 2, 341, 341, 2, 2, 357, 1340, 357, 2, 2, 373, 4084, 4084, 373, 2, 2, 389, 6956, 17548, 6956, 389, 2, 2, 405, 9956, 53092, 53092, 9956, 405, 2, 2, 421, 13084, 111740, 229020, 111740, 13084, 421, 2, 2, 437, 16340, 194516, 712404, 712404, 194516, 16340, 437, 2]