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A197594 as a simple table

n a(n)
2 3
3 7
4 15
5 127
6 511
7 1023
8 65535
9 2147483647
10 35184372088831
11 18014398509481983
12 18446744073709551615
13 3705346855594118253554271520278013051304639509300498049262642688253220148477951

[3,7,15,127,511,1023,65535,2147483647,
 35184372088831,18014398509481983,
 18446744073709551615,
 37053468555941182535542715202780130513046395093004\
 98049262642688253220148477951]

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Last modified April 24 22:17 EDT 2024. Contains 371964 sequences. (Running on oeis4.)