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A198769 as a simple table

n a(n)
0 2
1 11
2 56
3 281
4 1406
5 7031
6 35156
7 175781
8 878906
9 4394531
10 21972656
11 109863281
12 549316406
13 2746582031
14 13732910156
15 68664550781
16 343322753906
17 1716613769531
18 8583068847656
19 42915344238281
20 214576721191406
21 1072883605957031

[2,11,56,281,1406,7031,35156,175781,878906,
 4394531,21972656,109863281,549316406,2746582031,
 13732910156,68664550781,343322753906,
 1716613769531,8583068847656,42915344238281,
 214576721191406,1072883605957031]

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Last modified April 13 23:57 EDT 2021. Contains 342941 sequences. (Running on oeis4.)