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A063689 as a simple table

n a(n)
1 1
2 1
3 2
4 6
5 21
6 83
7 356
8 1599
9 7434
10 35381
11 171508
12 843419
13 4197179
14 21094355
15 106915928
16 545859112
17 2804656069
18 14491370996
19 75248398034
20 392476363133
21 2055245992376
22 10801442696736
23 56953957110855
24 301207378815752
25 1597342159296786
26 8492297139795170

[1,1,2,6,21,83,356,1599,7434,35381,171508,843419,
 4197179,21094355,106915928,545859112,2804656069,
 14491370996,75248398034,392476363133,
 2055245992376,10801442696736,56953957110855,
 301207378815752,1597342159296786,8492297139795170]

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