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A006040 as a simple table

n a(n)
0 1
1 2
2 9
3 82
4 1313
5 32826
6 1181737
7 57905114
8 3705927297
9 300180111058
10 30018011105801
11 3632179343801922
12 523033825507476769
13 88392716510763573962
14 17324972436109660496553
15 3898118798124673611724426
16 997918412319916444601453057
17 288398421160455852489819933474

[1,2,9,82,1313,32826,1181737,57905114,3705927297,
 300180111058,30018011105801,3632179343801922,
 523033825507476769,88392716510763573962,
 17324972436109660496553,3898118798124673611724426,
 997918412319916444601453057,
 288398421160455852489819933474]

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Last modified January 20 08:18 EST 2020. Contains 331081 sequences. (Running on oeis4.)