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A303117 as a simple table

n a(n)
0 1
1 1
2 1
3 2
4 6
5 18
6 62
7 186
8 570
9 1680
10 4890
11 14058
12 40200
13 114450
14 325230
15 923846
16 2624730
17 7465410
18 21260652
19 60647370
20 173288724
21 496014934
22 1422211494
23 4084793082
24 11751102060
25 33857989968
26 97696908330
27 282295318536
28 816759712080
29 2366027865810
30 6861963548198
31 19922800783578
32 57902584654650

[1,1,1,2,6,18,62,186,570,1680,4890,14058,40200,
 114450,325230,923846,2624730,7465410,21260652,
 60647370,173288724,496014934,1422211494,
 4084793082,11751102060,33857989968,97696908330,
 282295318536,816759712080,2366027865810,
 6861963548198,19922800783578,57902584654650]

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Last modified July 12 10:18 EDT 2024. Contains 374244 sequences. (Running on oeis4.)