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A198852 as a simple table

n a(n)
0 3
1 31
2 255
3 2047
4 16383
5 131071
6 1048575
7 8388607
8 67108863
9 536870911
10 4294967295
11 34359738367
12 274877906943
13 2199023255551
14 17592186044415
15 140737488355327
16 1125899906842623
17 9007199254740991
18 72057594037927935

[3,31,255,2047,16383,131071,1048575,8388607,
 67108863,536870911,4294967295,34359738367,
 274877906943,2199023255551,17592186044415,
 140737488355327,1125899906842623,9007199254740991,
 72057594037927935]

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Last modified April 25 13:34 EDT 2024. Contains 371971 sequences. (Running on oeis4.)