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A001396 as a simple table

n a(n)
0 1
1 4
2 28
3 188
4 1428
5 10708
6 82948
7 644788
8 5067404
9 40016460
10 317727164
11 2532064332
12 20247784124
13 162353831796
14 1304943724900
15 10510168583516 

[1,4,28,188,1428,10708,82948,644788,5067404,
 40016460,317727164,2532064332,20247784124,
 162353831796,1304943724900,10510168583516]

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Last modified April 24 17:51 EDT 2024. Contains 371962 sequences. (Running on oeis4.)