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A221679 as a simple table

n a(n)
1 0
2 2
3 5
4 26
5 100
6 418
7 1692
8 6932
9 28288
10 115604
11 472188
12 1929012
13 7880012
14 32190588
15 131500508
16 537189116
17 2194454252
18 8964498844
19 36620598988
20 149597691420
21 611116954220
22 2496455194876
23 10198192807820
24 41660325742812

[0,2,5,26,100,418,1692,6932,28288,115604,472188,
 1929012,7880012,32190588,131500508,537189116,
 2194454252,8964498844,36620598988,149597691420,
 611116954220,2496455194876,10198192807820,
 41660325742812]

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Last modified January 28 12:44 EST 2023. Contains 359892 sequences. (Running on oeis4.)