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A224659 as a simple table

n a(n)
1 3
2 12
3 50
4 108
5 260
6 542
7 1126
8 2230
9 4336
10 8246
11 15458
12 28608
13 52420
14 95240
15 171814
16 308056
17 549384
18 975130
19 1723482
20 3034498
21 5324180
22 9311762
23 16238070

[3,12,50,108,260,542,1126,2230,4336,8246,15458,
 28608,52420,95240,171814,308056,549384,975130,
 1723482,3034498,5324180,9311762,16238070]

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Last modified January 28 06:26 EST 2022. Contains 350654 sequences. (Running on oeis4.)