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A149139 as a simple table

n a(n)
0 1
1 1
2 4
3 9
4 36
5 110
6 440
7 1485
8 6038
9 21770
10 90166
11 335868
12 1405402
13 5375252
14 22720338
15 88585501
16 376880976
17 1490018552
18 6375130214
19 25514622182
20 109661163910
21 442953363234
22 1910605636686
23 7780053826624
24 33664098882158
25 138014571325972
26 598708608700234
27 2468677410383886
28 10733193310292636

[1,1,4,9,36,110,440,1485,6038,21770,90166,335868,
 1405402,5375252,22720338,88585501,376880976,
 1490018552,6375130214,25514622182,109661163910,
 442953363234,1910605636686,7780053826624,
 33664098882158,138014571325972,598708608700234,
 2468677410383886,10733193310292636]

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Last modified April 25 05:49 EDT 2024. Contains 371964 sequences. (Running on oeis4.)