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A071976 as a simple table

n a(n)
1 1
2 2
3 6
4 20
5 70
6 252
7 924
8 3432
9 12870
10 48619
11 184735
12 705222
13 2702609
14 10390940
15 40062132
16 154830696
17 599641425
18 2326640877
19 9042327525
20 35194002709
21 137160956815
22 535193552973
23 2090558951396
24 8174176541450
25 31990402045260

[1,2,6,20,70,252,924,3432,12870,48619,184735,
 705222,2702609,10390940,40062132,154830696,
 599641425,2326640877,9042327525,35194002709,
 137160956815,535193552973,2090558951396,
 8174176541450,31990402045260]

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Last modified September 18 11:24 EDT 2024. Contains 376000 sequences. (Running on oeis4.)