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A207321 as a simple table

n a(n)
0 0
1 3
2 18
3 111
4 750
5 5403
6 40572
7 313407
8 2471166
9 19791003
10 160459068
11 1313922063
12 10847561088
13 90174127683
14 754009158018
15 6336733626111
16 53489159252670
17 453258909448635
18 3854034482891724
19 32871004555812111
20 281127047928811200
21 2410285909684370787
22 20711470169495359602
23 178337708176330555839

[0,3,18,111,750,5403,40572,313407,2471166,
 19791003,160459068,1313922063,10847561088,
 90174127683,754009158018,6336733626111,
 53489159252670,453258909448635,3854034482891724,
 32871004555812111,281127047928811200,
 2410285909684370787,20711470169495359602,
 178337708176330555839]

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Last modified January 17 14:57 EST 2020. Contains 330958 sequences. (Running on oeis4.)