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A252222 as a simple table

n a(n)
1 368
2 1028
3 3066
4 7724
5 22256
6 70284
7 219824
8 675264
9 2072804
10 6383492
11 19670396
12 60581792
13 186548780
14 574478144
15 1769185920
16 5448417444
17 16778894996
18 51672129164
19 159129275664
20 490053971084
21 1509168106704
22 4647627251072

[368,1028,3066,7724,22256,70284,219824,675264,
 2072804,6383492,19670396,60581792,186548780,
 574478144,1769185920,5448417444,16778894996,
 51672129164,159129275664,490053971084,
 1509168106704,4647627251072]

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Last modified October 26 04:27 EDT 2021. Contains 348256 sequences. (Running on oeis4.)