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A173613 as a simple table

n a(n)
0 1
1 2
2 10
3 60
4 384
5 2752
6 19436
7 132888
8 938448
9 6977712
10 52748180
11 402295360
12 3045774336
13 22798000896
14 169191995264
15 1244649595008
16 9253079696256
17 69936818500032
18 532964898123840
19 4089541311972480
20 31558707924799104

[1,2,10,60,384,2752,19436,132888,938448,6977712,
 52748180,402295360,3045774336,22798000896,
 169191995264,1244649595008,9253079696256,
 69936818500032,532964898123840,4089541311972480,
 31558707924799104]

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Last modified October 20 05:51 EDT 2020. Contains 337897 sequences. (Running on oeis4.)