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A240291 as a simple table

n a(n)
1 8
2 26
3 206
4 974
5 8064
6 38252
7 316962
8 1502948
9 12468758
10 59122266
11 490548594
12 2326075252
13 19300603720
14 91520046552
15 759392572070
16 3600913438102
17 29878821186710
18 141680483207634
19 1175603702913842
20 5574521174572456 

[8,26,206,974,8064,38252,316962,1502948,12468758,
 59122266,490548594,2326075252,19300603720,
 91520046552,759392572070,3600913438102,
 29878821186710,141680483207634,1175603702913842,
 5574521174572456]

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Last modified May 14 14:06 EDT 2024. Contains 372533 sequences. (Running on oeis4.)