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A161748 as a simple table

n a(n)
1 2
2 2
3 2
4 17
5 31
6 971
7 127
8 856073
9 19427
10 58537
11 176123
12 529393
13 8191
14 128467258961
15 977123207545039
16 43013953
17 131071
18 3814697134553
19 524287
20 79792266297087713 

[2,2,2,17,31,971,127,856073,19427,58537,176123,
 529393,8191,128467258961,977123207545039,43013953,
 131071,3814697134553,524287,79792266297087713]

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Last modified September 17 11:02 EDT 2024. Contains 375987 sequences. (Running on oeis4.)