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A007648 as a simple table

n a(n)
1 1
2 3
3 21
4 23
5 842
6 1683
7 3401
8 16839
9 49963
10 60239
11 150940
12 155928

[1,3,21,23,842,1683,3401,16839,49963,60239,150940,
 155928]

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Last modified May 21 09:30 EDT 2022. Contains 353908 sequences. (Running on oeis4.)