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A099464 as a simple table

n a(n)
0 0
1 1
2 7
3 44
4 274
5 1705
6 10609
7 66012
8 410744
9 2555757
10 15902591
11 98950096
12 615693474
13 3831006429
14 23837527729
15 148323355432
16 922906855808
17 5742568741225
18 35731770264967
19 222332455004452
20 1383410902447554
21 8607945812375585
22 53560898629395777
23 333269972246340068

[0,1,7,44,274,1705,10609,66012,410744,2555757,
 15902591,98950096,615693474,3831006429,
 23837527729,148323355432,922906855808,
 5742568741225,35731770264967,222332455004452,
 1383410902447554,8607945812375585,
 53560898629395777,333269972246340068]

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Last modified December 13 22:55 EST 2019. Contains 329974 sequences. (Running on oeis4.)