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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.

A346500 Number A(n,k) of partitions of the (n+k)-multiset {1,2,...,n,1,2,...,k}; square array A(n,k), n>=0, k>=0, read by antidiagonals.

Table of values

n a(n)
0 1
1 1
2 1
3 2
4 2
5 2
6 5
7 4
8 4
9 5
10 15
11 11
12 9
13 11
14 15
15 52
16 36
17 26
18 26
19 36
20 52
21 203
22 135
23 92
24 66
25 92
26 135
27 203
28 877
29 566
30 371
31 249
32 249
33 371
34 566
35 877
36 4140
37 2610
38 1663
39 1075
40 712
41 1075
42 1663
43 2610
44 4140
45 21147
46 13082
47 8155
48 5133
49 3274
50 3274
51 5133
52 8155
53 13082
54 21147

List of values

[1, 1, 1, 2, 2, 2, 5, 4, 4, 5, 15, 11, 9, 11, 15, 52, 36, 26, 26, 36, 52, 203, 135, 92, 66, 92, 135, 203, 877, 566, 371, 249, 249, 371, 566, 877, 4140, 2610, 1663, 1075, 712, 1075, 1663, 2610, 4140, 21147, 13082, 8155, 5133, 3274, 3274, 5133, 8155, 13082, 21147]