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A100308 as a simple table

n a(n)
0 1
1 6
2 26
3 156
4 626
5 3756
6 16276
7 97656
8 390626
9 2343756
10 10156276
11 60937656
12 244531876
13 1467191256
14 6357828776
15 38146972656
16 152587890626
17 915527343756
18 3967285156276
19 23803710937656
20 95520019531876
21 573120117191256

[1,6,26,156,626,3756,16276,97656,390626,2343756,
 10156276,60937656,244531876,1467191256,6357828776,
 38146972656,152587890626,915527343756,
 3967285156276,23803710937656,95520019531876,
 573120117191256]

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Last modified August 14 19:47 EDT 2020. Contains 336483 sequences. (Running on oeis4.)