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A158197 as a simple table

n a(n)
0 1
1 4
2 23
3 140
4 866
5 5388
6 33603
7 209796
8 1310510
9 8188328
10 51169094
11 319779544
12 1998527188
13 12490460620
14 78064190235
15 487896926580
16 3049340393430
17 19058321475960
18 119114304522450
19 744463650984360
20 4652895041524380

[1,4,23,140,866,5388,33603,209796,1310510,8188328,
 51169094,319779544,1998527188,12490460620,
 78064190235,487896926580,3049340393430,
 19058321475960,119114304522450,744463650984360,
 4652895041524380]

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Last modified April 20 00:03 EDT 2024. Contains 371798 sequences. (Running on oeis4.)