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A153969 as a simple table

n a(n)
0 1
1 2
2 4
3 16
4 63
5 396
6 2827
7 37617
8 513564
9 13162553
10 341036622
11 16622509689
12 823228295943
13 76578732281797
14 7241902334442198
15 1280682968270209748 

[1,2,4,16,63,396,2827,37617,513564,13162553,
 341036622,16622509689,823228295943,76578732281797,
 7241902334442198,1280682968270209748]

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Last modified September 1 02:48 EDT 2024. Contains 375575 sequences. (Running on oeis4.)