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.

A330510 Triangle read by rows: T(n,k) is the number of ternary strings of length n+1 with k+1 indispensable digits and a nonzero leading digit, with 0 <= k <= n.

Table of values

n a(n)
0 2
1 3
2 3
3 4
4 10
5 4
6 5
7 22
8 22
9 5
10 6
11 40
12 70
13 40
14 6
15 7
16 65
17 171
18 171
19 65
20 7
21 8
22 98
23 356
24 534
25 356
26 98
27 8
28 9
29 140
30 665
31 1373
32 1373
33 665
34 140
35 9
36 10
37 192
38 1148
39 3088
40 4246
41 3088
42 1148
43 192
44 10
45 11
46 255
47 1866
48 6294
49 11257
50 11257
51 6294
52 1866
53 255
54 11

List of values

[2, 3, 3, 4, 10, 4, 5, 22, 22, 5, 6, 40, 70, 40, 6, 7, 65, 171, 171, 65, 7, 8, 98, 356, 534, 356, 98, 8, 9, 140, 665, 1373, 1373, 665, 140, 9, 10, 192, 1148, 3088, 4246, 3088, 1148, 192, 10, 11, 255, 1866, 6294, 11257, 11257, 6294, 1866, 255, 11]