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A232687 as a simple table

n a(n)
0 1
1 1
2 3
3 7
4 20
5 66
6 244
7 980
8 4182
9 18674
10 86353
11 410541
12 1996214
13 9888844
14 49760925
15 253767097
16 1309154825
17 6822023553
18 35865392690
19 190038440422
20 1014015337209
21 5444707218851
22 29401289997403
23 159584901816255
24 870267544114291
25 4766246752344215
26 26206635040151511

[1,1,3,7,20,66,244,980,4182,18674,86353,410541,
 1996214,9888844,49760925,253767097,1309154825,
 6822023553,35865392690,190038440422,1014015337209,
 5444707218851,29401289997403,159584901816255,
 870267544114291,4766246752344215,
 26206635040151511]

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Last modified August 26 06:07 EDT 2024. Contains 375454 sequences. (Running on oeis4.)