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A155592 as a simple table

n a(n)
0 1
1 9
2 67
3 519
4 4111
5 32799
6 262207
7 2097279
8 16777471
9 134218239
10 1073742847
11 8589936639
12 68719480831
13 549755822079
14 4398046527487
15 35184372121599
16 281474976776191
17 2251799813816319
18 18014398509744127
19 144115188076380159

[1,9,67,519,4111,32799,262207,2097279,16777471,
 134218239,1073742847,8589936639,68719480831,
 549755822079,4398046527487,35184372121599,
 281474976776191,2251799813816319,
 18014398509744127,144115188076380159]

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Last modified April 23 07:42 EDT 2024. Contains 371905 sequences. (Running on oeis4.)