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A302064 as a simple table

n a(n)
1 4
2 25
3 148
4 884
5 5296
6 31760
7 190528
8 1143104
9 6858496
10 41150720
11 246903808
12 1481421824
13 8888528896
14 53331169280
15 319987007488
16 1919922028544
17 11519532138496
18 69117192765440
19 414703156461568
20 2488218938507264

[4,25,148,884,5296,31760,190528,1143104,6858496,
 41150720,246903808,1481421824,8888528896,
 53331169280,319987007488,1919922028544,
 11519532138496,69117192765440,414703156461568,
 2488218938507264]

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Last modified March 28 09:04 EDT 2024. Contains 371240 sequences. (Running on oeis4.)