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A058408 as a simple table

n a(n)
0 1
1 4
2 26
3 129
4 546
5 2010
6 6615
7 19650
8 53790
9 137035
10 328262
11 745078
12 1613072
13 3348198
14 6693822
15 12937656
16 24253200
17 44219610
18 78604130
19 136511100
20 232054284

[1,4,26,129,546,2010,6615,19650,53790,137035,
 328262,745078,1613072,3348198,6693822,12937656,
 24253200,44219610,78604130,136511100,232054284]

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Last modified May 25 09:23 EDT 2024. Contains 372786 sequences. (Running on oeis4.)