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A217958 as a simple table

n a(n)
1 3
2 17
3 77
4 343
5 1523
6 6761
7 30013
8 133231
9 591427
10 2625409
11 11654477
12 51735495
13 229659507
14 1019483609
15 4525598973
16 20089627615
17 89180048899
18 395879967217
19 1757354367693
20 7801087777591
21 34629879796851
22 153725814775369

[3,17,77,343,1523,6761,30013,133231,591427,
 2625409,11654477,51735495,229659507,1019483609,
 4525598973,20089627615,89180048899,395879967217,
 1757354367693,7801087777591,34629879796851,
 153725814775369]

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Last modified April 23 06:04 EDT 2024. Contains 371906 sequences. (Running on oeis4.)