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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.

A099597 Array T(n,k) read by antidiagonals: expansion of exp(x+y)/(1-xy).

Table of values

n a(n)
0 1
1 1
2 1
3 1
4 2
5 1
6 1
7 3
8 3
9 1
10 1
11 4
12 9
13 4
14 1
15 1
16 5
17 19
18 19
19 5
20 1
21 1
22 6
23 33
24 82
25 33
26 6
27 1
28 1
29 7
30 51
31 229
32 229
33 51
34 7
35 1
36 1
37 8
38 73
39 496
40 1313
41 496
42 73
43 8
44 1
45 1
46 9
47 99
48 919
49 4581
50 4581
51 919
52 99
53 9
54 1
55 1
56 10
57 129
58 1534
59 11905
60 32826
61 11905
62 1534
63 129
64 10
65 1
66 1
67 11
68 163
69 2377
70 25733
71 137431
72 137431
73 25733
74 2377
75 163
76 11
77 1

List of values

[1, 1, 1, 1, 2, 1, 1, 3, 3, 1, 1, 4, 9, 4, 1, 1, 5, 19, 19, 5, 1, 1, 6, 33, 82, 33, 6, 1, 1, 7, 51, 229, 229, 51, 7, 1, 1, 8, 73, 496, 1313, 496, 73, 8, 1, 1, 9, 99, 919, 4581, 4581, 919, 99, 9, 1, 1, 10, 129, 1534, 11905, 32826, 11905, 1534, 129, 10, 1, 1, 11, 163, 2377, 25733, 137431, 137431, 25733, 2377, 163, 11, 1]