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A228209 as a simple table

n a(n)
1 3
2 7
3 13
4 57
5 253
6 487
7 2163
8 9607
9 18493
10 82137
11 364813
12 702247
13 3119043
14 13853287
15 26666893
16 118441497
17 526060093
18 1012639687
19 4497657843
20 19976430247
21 38453641213
22 170792556537
23 758578289293
24 1460225726407
25 6485619490563
26 28805998562887
27 55450123962253

[3,7,13,57,253,487,2163,9607,18493,82137,364813,
 702247,3119043,13853287,26666893,118441497,
 526060093,1012639687,4497657843,19976430247,
 38453641213,170792556537,758578289293,
 1460225726407,6485619490563,28805998562887,
 55450123962253]

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Last modified April 16 05:35 EDT 2024. Contains 371697 sequences. (Running on oeis4.)