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A196851 as a simple table

n a(n)
1 4
2 38
3 206
4 1370
5 8767
6 56470
7 363685
8 2343584
9 15108610
10 97376923
11 627590184
12 4044924351
13 26070308556
14 168028055199
15 1082971243944
16 6979940126878
17 44986968132898
18 289949111595991
19 1868774104215258
20 12044584704922151

[4,38,206,1370,8767,56470,363685,2343584,15108610,
 97376923,627590184,4044924351,26070308556,
 168028055199,1082971243944,6979940126878,
 44986968132898,289949111595991,1868774104215258,
 12044584704922151]

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Last modified September 23 16:29 EDT 2021. Contains 347618 sequences. (Running on oeis4.)