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A020111 as a simple table

n a(n)
0 1
1 1
2 1
3 3
4 8
5 36
6 199
7 1303
8 9844
9 84217
10 804739
11 8494461
12 98158214
13 1232430909
14 16706285647
15 243169268857
16 3782633071104
17 62623591954943
18 1099391947653438
19 20399828362013788
20 398929976857158504

[1,1,1,3,8,36,199,1303,9844,84217,804739,8494461,
 98158214,1232430909,16706285647,243169268857,
 3782633071104,62623591954943,1099391947653438,
 20399828362013788,398929976857158504]

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Last modified March 28 14:21 EDT 2024. Contains 371254 sequences. (Running on oeis4.)