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A115098 as a simple table

n a(n)
0 2
1 3
2 6
3 15
4 42
5 123
6 366
7 1095
8 3282
9 9843
10 29526
11 88575
12 265722
13 797163
14 2391486
15 7174455
16 21523362
17 64570083
18 193710246
19 581130735
20 1743392202
21 5230176603
22 15690529806
23 47071589415
24 141214768242
25 423644304723
26 1270932914166

[2,3,6,15,42,123,366,1095,3282,9843,29526,88575,
 265722,797163,2391486,7174455,21523362,64570083,
 193710246,581130735,1743392202,5230176603,
 15690529806,47071589415,141214768242,423644304723,
 1270932914166]

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Last modified April 23 10:13 EDT 2024. Contains 371905 sequences. (Running on oeis4.)