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A005647 as a simple table

n a(n)
0 1
1 1
2 3
3 19
4 217
5 3961
6 105963
7 3908059
8 190065457
9 11785687921
10 907546301523
11 84965187064099
12 9504085749177097
13 1251854782837499881
14 191781185418766714683
15 33810804270120276636139
16 6796689405759438360407137
17 1545327493049348356667631841

[1,1,3,19,217,3961,105963,3908059,190065457,
 11785687921,907546301523,84965187064099,
 9504085749177097,1251854782837499881,
 191781185418766714683,33810804270120276636139,
 6796689405759438360407137,
 1545327493049348356667631841]

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Last modified February 21 19:40 EST 2019. Contains 320376 sequences. (Running on oeis4.)