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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.

A290959 Matrix rank of the number of dots in the pairwise intersections of Ferrers diagrams.

Table of values

n a(n)
1 1
2 2
3 3
4 5
5 7
6 11
7 13
8 17
9 20
10 24
11 26
12 32
13 34
14 38
15 42
16 47
17 49
18 55
19 57
20 63
21 67
22 71
23 73
24 81
25 84
26 88

List of values

[1, 2, 3, 5, 7, 11, 13, 17, 20, 24, 26, 32, 34, 38, 42, 47, 49, 55, 57, 63, 67, 71, 73, 81, 84, 88]