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A220726 as a simple table

n a(n)
1 1
2 2
3 7
4 21
5 68
6 221
7 717
8 2330
9 7571
10 24601
11 79940
12 259761
13 844081
14 2742802
15 8912607
16 28961101
17 94107748
18 305798741
19 993678757
20 3228912810
21 10492201691
22 34093920401
23 110786605380
24 359995910921
25 1169789934761
26 3801177874402

[1,2,7,21,68,221,717,2330,7571,24601,79940,259761,
 844081,2742802,8912607,28961101,94107748,
 305798741,993678757,3228912810,10492201691,
 34093920401,110786605380,359995910921,
 1169789934761,3801177874402]

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Last modified March 28 05:39 EDT 2024. Contains 371235 sequences. (Running on oeis4.)