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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.

A106534 Sum array of Catalan numbers (A000108) read by upward antidiagonals.

Table of values

n a(n)
0 1
1 2
2 1
3 5
4 3
5 2
6 15
7 10
8 7
9 5
10 51
11 36
12 26
13 19
14 14
15 188
16 137
17 101
18 75
19 56
20 42
21 731
22 543
23 406
24 305
25 230
26 174
27 132
28 2950
29 2219
30 1676
31 1270
32 965
33 735
34 561
35 429
36 12235
37 9285
38 7066
39 5390
40 4120
41 3155
42 2420
43 1859
44 1430
45 51822
46 39587
47 30302
48 23236
49 17846
50 13726
51 10571
52 8151
53 6292
54 4862

List of values

[1, 2, 1, 5, 3, 2, 15, 10, 7, 5, 51, 36, 26, 19, 14, 188, 137, 101, 75, 56, 42, 731, 543, 406, 305, 230, 174, 132, 2950, 2219, 1676, 1270, 965, 735, 561, 429, 12235, 9285, 7066, 5390, 4120, 3155, 2420, 1859, 1430, 51822, 39587, 30302, 23236, 17846, 13726, 10571, 8151, 6292, 4862]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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