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A287257 as a simple table

n a(n)
0 1
1 1
2 2
3 5
4 15
5 52
6 203
7 877
8 4140
9 21146
10 115843
11 675473
12 4168497
13 27104931
14 185021744
15 1321754226
16 9855001715
17 76507188271
18 617104691644
19 5161680552010
20 44693782407111
21 399989835781046
22 3694733749868820
23 35179653387299934
24 344876641013083336

[1,1,2,5,15,52,203,877,4140,21146,115843,675473,
 4168497,27104931,185021744,1321754226,9855001715,
 76507188271,617104691644,5161680552010,
 44693782407111,399989835781046,3694733749868820,
 35179653387299934,344876641013083336]

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Last modified April 19 12:14 EDT 2024. Contains 371792 sequences. (Running on oeis4.)