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A000667 as a simple table

n a(n)
0 1
1 2
2 4
3 9
4 24
5 77
6 294
7 1309
8 6664
9 38177
10 243034
11 1701909
12 13001604
13 107601977
14 959021574
15 9157981309
16 93282431344
17 1009552482977
18 11568619292914
19 139931423833509
20 1781662223749884
21 23819069385695177
22 333601191667149054
23 4884673638115922509

[1,2,4,9,24,77,294,1309,6664,38177,243034,1701909,
 13001604,107601977,959021574,9157981309,
 93282431344,1009552482977,11568619292914,
 139931423833509,1781662223749884,
 23819069385695177,333601191667149054,
 4884673638115922509]

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Last modified September 20 10:04 EDT 2020. Contains 337264 sequences. (Running on oeis4.)