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A129777 as a simple table

n a(n)
1 1
2 2
3 6
4 20
5 71
6 260
7 971
8 3670
9 13968
10 53369
11 204352
12 783408
13 3005284
14 11533014
15 44267854
16 169935041
17 652385639
18 2504613713
19 9615798516
20 36917689075
21 141737959416
22 544175811783
23 2089262741393
24 8021347093432
25 30796530585417
26 118237818141689
27 453953210838465

[1,2,6,20,71,260,971,3670,13968,53369,204352,
 783408,3005284,11533014,44267854,169935041,
 652385639,2504613713,9615798516,36917689075,
 141737959416,544175811783,2089262741393,
 8021347093432,30796530585417,118237818141689,
 453953210838465]

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Last modified May 4 11:42 EDT 2024. Contains 372240 sequences. (Running on oeis4.)