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A291228 as a simple table

n a(n)
0 2
1 6
2 18
3 56
4 170
5 522
6 1594
7 4880
8 14922
9 45654
10 139642
11 427176
12 1306690
13 3997146
14 12227058
15 37402144
16 114411538
17 349980390
18 1070575586
19 3274847512
20 10017625050
21 30643508586
22 93737246762
23 286738430256
24 877121205338
25 2683078129590
26 8207426973258

[2,6,18,56,170,522,1594,4880,14922,45654,139642,
 427176,1306690,3997146,12227058,37402144,
 114411538,349980390,1070575586,3274847512,
 10017625050,30643508586,93737246762,286738430256,
 877121205338,2683078129590,8207426973258]

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Last modified April 23 22:36 EDT 2024. Contains 371917 sequences. (Running on oeis4.)