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A100741 as a simple table

n a(n)
0 1
1 7
2 63
3 441
4 4095
5 28665
6 257985
7 1805895
8 16777215
9 117440505
10 1056964545
11 7398751815
12 68702695425
13 480918867975
14 4328269811775
15 30297888682425
16 281474976710655
17 1970324836974585
18 17732923532771265
19 124130464729398855

[1,7,63,441,4095,28665,257985,1805895,16777215,
 117440505,1056964545,7398751815,68702695425,
 480918867975,4328269811775,30297888682425,
 281474976710655,1970324836974585,
 17732923532771265,124130464729398855]

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Last modified May 16 18:13 EDT 2021. Contains 343949 sequences. (Running on oeis4.)