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A013091 as a simple table

n a(n)
0 1
1 2
2 4
3 9
4 24
5 97
6 534
7 2975
8 16520
9 114217
10 1017914
11 8693355
12 66612612
13 641356549
14 8612481206
15 99659748575
16 839464647792
17 10015783072433
18 223263066398386
19 3322983000373651
20 20349154329810172

[1,2,4,9,24,97,534,2975,16520,114217,1017914,
 8693355,66612612,641356549,8612481206,99659748575,
 839464647792,10015783072433,223263066398386,
 3322983000373651,20349154329810172]

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Last modified December 1 14:21 EST 2022. Contains 358468 sequences. (Running on oeis4.)