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A216641 as a simple table

n a(n)
1 1
2 1
3 1
4 1
5 1
6 2
7 2
8 6
9 12
10 30
11 76
12 224
13 597
14 1801
15 5469
16 16958
17 53308
18 169872
19 548344
20 1791949
21 5915441
22 19700851
23 66148464
24 223751776
25 761919971
26 2610778118
27 8998428171
28 31179152130
29 108577507149
30 379879051198

[1,1,1,1,1,2,2,6,12,30,76,224,597,1801,5469,16958,
 53308,169872,548344,1791949,5915441,19700851,
 66148464,223751776,761919971,2610778118,
 8998428171,31179152130,108577507149,379879051198]

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Last modified April 23 02:41 EDT 2024. Contains 371906 sequences. (Running on oeis4.)