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A211768 as a simple table

n a(n)
0 1
1 1
2 1
3 2
4 4
5 12
6 35
7 133
8 497
9 2256
10 10123
11 53131
12 276210
13 1638039
14 9639943
15 63526677
16 416194299
17 3009639922
18 21672348693
19 170290649517
20 1334332599748
21 11302630861664
22 95587196023618
23 867197921850406
24 7862652321850812
25 75983785567389333
26 734442008292947615

[1,1,1,2,4,12,35,133,497,2256,10123,53131,276210,
 1638039,9639943,63526677,416194299,3009639922,
 21672348693,170290649517,1334332599748,
 11302630861664,95587196023618,867197921850406,
 7862652321850812,75983785567389333,
 734442008292947615]

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Last modified April 24 15:18 EDT 2024. Contains 371960 sequences. (Running on oeis4.)