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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.

A008550 Table T(n,k), n>=0 and k>=0, read by antidiagonals: the k-th column given by the k-th Narayana polynomial.

Table of values

n a(n)
0 1
1 1
2 1
3 1
4 1
5 1
6 1
7 2
8 1
9 1
10 1
11 5
12 3
13 1
14 1
15 1
16 14
17 11
18 4
19 1
20 1
21 1
22 42
23 45
24 19
25 5
26 1
27 1
28 1
29 132
30 197
31 100
32 29
33 6
34 1
35 1
36 1
37 429
38 903
39 562
40 185
41 41
42 7
43 1
44 1
45 1
46 1430
47 4279
48 3304
49 1257
50 306
51 55
52 8
53 1
54 1
55 1
56 4862
57 20793
58 20071
59 8925
60 2426
61 469
62 71
63 9
64 1
65 1

List of values

[1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 5, 3, 1, 1, 1, 14, 11, 4, 1, 1, 1, 42, 45, 19, 5, 1, 1, 1, 132, 197, 100, 29, 6, 1, 1, 1, 429, 903, 562, 185, 41, 7, 1, 1, 1, 1430, 4279, 3304, 1257, 306, 55, 8, 1, 1, 1, 4862, 20793, 20071, 8925, 2426, 469, 71, 9, 1, 1]