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A018193 as a simple table

n a(n)
1 1
2 1
3 3
4 11
5 69
6 602
7 6531
8 84737
9 1271143
10 21623667
11 411133711
12 8639077230
13 198801435313
14 4972210166209
15 134299831740091
16 3895950849227855
17 120808412263797173
18 3987662458459383826
19 139598735205063044939

[1,1,3,11,69,602,6531,84737,1271143,21623667,
 411133711,8639077230,198801435313,4972210166209,
 134299831740091,3895950849227855,
 120808412263797173,3987662458459383826,
 139598735205063044939]

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Last modified March 29 01:36 EDT 2024. Contains 371264 sequences. (Running on oeis4.)