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A217950 as a simple table

n a(n)
1 4
2 16
3 50
4 130
5 296
6 624
7 1289
8 2741
9 6134
10 14269
11 33577
12 78304
13 179671
14 406765
15 915275
16 2061311
17 4664237
18 10605587
19 24181837
20 55152622
21 125626530
22 285683099
23 648937238
24 1473615534
25 3347303199
26 7607369029
27 17296530794
28 39333312344

[4,16,50,130,296,624,1289,2741,6134,14269,33577,
 78304,179671,406765,915275,2061311,4664237,
 10605587,24181837,55152622,125626530,285683099,
 648937238,1473615534,3347303199,7607369029,
 17296530794,39333312344]

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Last modified April 23 22:35 EDT 2024. Contains 371917 sequences. (Running on oeis4.)