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A056632 as a simple table

n a(n)
1 4
2 12
3 48
4 188
5 740
6 2936
7 11672
8 46388
9 184352
10 732608
11 2911040
12 11565964
13 45949600
14 182538264
15 725108640
16 2880270032
17 11440564516
18 45441048384
19 180483666608
20 716832688844
21 2847012624636
22 11307166941460

[4,12,48,188,740,2936,11672,46388,184352,732608,
 2911040,11565964,45949600,182538264,725108640,
 2880270032,11440564516,45441048384,180483666608,
 716832688844,2847012624636,11307166941460]

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Last modified August 24 18:44 EDT 2024. Contains 375417 sequences. (Running on oeis4.)