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A287901 as a simple table

n a(n)
0 1
1 1
2 1
3 3
4 6
5 17
6 49
7 147
8 459
9 1476
10 4856
11 16282
12 55466
13 191474
14 668510
15 2356944
16 8380944
17 30025814
18 108289093
19 392871484
20 1432934360
21 5251507624
22 19329771911
23 71430479820
24 264914270527
25 985737417231
26 3679051573264
27 13769781928768
28 51670641652576

[1,1,1,3,6,17,49,147,459,1476,4856,16282,55466,
 191474,668510,2356944,8380944,30025814,108289093,
 392871484,1432934360,5251507624,19329771911,
 71430479820,264914270527,985737417231,
 3679051573264,13769781928768,51670641652576]

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Last modified April 25 11:39 EDT 2024. Contains 371969 sequences. (Running on oeis4.)