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A019034 as a simple table

n a(n)
2 2
3 4
4 26
5 206
6 1311
7 7442
8 44452
9 281652
10 1791706
11 11399302
12 73600602
13 482406796
14 3197748646
15 21392739205
16 144427720544

[2,4,26,206,1311,7442,44452,281652,1791706,
 11399302,73600602,482406796,3197748646,
 21392739205,144427720544]

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Last modified April 23 12:27 EDT 2024. Contains 371912 sequences. (Running on oeis4.)