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A223015 as a simple table

n a(n)
1 8
2 34
3 169
4 840
5 4685
6 27159
7 162547
8 990115
9 6118763
10 38172647
11 239969655
12 1517064784
13 9633861872
14 61400164050
15 392501061255
16 2515493966790
17 16156763152645
18 103972548325169
19 670214851495833
20 4326757779281260

[8,34,169,840,4685,27159,162547,990115,6118763,
 38172647,239969655,1517064784,9633861872,
 61400164050,392501061255,2515493966790,
 16156763152645,103972548325169,670214851495833,
 4326757779281260]

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Last modified June 30 08:51 EDT 2022. Contains 354919 sequences. (Running on oeis4.)