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A220878 as a simple table

n a(n)
0 1
1 2
2 11
3 75
4 578
5 4791
6 41657
7 374728
8 3458073
9 32553979
10 311399612
11 3018079529
12 29573648337
13 292494535982
14 2916080902215
15 29274765251531
16 295683573477358
17 3002574533715331
18 30636334463337153
19 313935121354840276
20 3229378471937953501
21 33336180648639258723

[1,2,11,75,578,4791,41657,374728,3458073,32553979,
 311399612,3018079529,29573648337,292494535982,
 2916080902215,29274765251531,295683573477358,
 3002574533715331,30636334463337153,
 313935121354840276,3229378471937953501,
 33336180648639258723]

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Last modified August 4 19:03 EDT 2021. Contains 346455 sequences. (Running on oeis4.)