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A213245 as a simple table

n a(n)
1 1
2 3
3 1
4 15
5 31
6 9
7 127
8 255
9 73
10 1023
11 2047
12 585
13 8191
14 16383
15 4681
16 65535
17 131071
18 37449
19 524287
20 1048575
21 299593
22 4194303
23 8388607
24 2396745
25 33554431
26 67108863
27 19173961
28 268435455
29 536870911
30 153391689
31 2147483647
32 4294967295
33 1227133513
34 17179869183
35 34359738367
36 9817068105

[1,3,1,15,31,9,127,255,73,1023,2047,585,8191,
 16383,4681,65535,131071,37449,524287,1048575,
 299593,4194303,8388607,2396745,33554431,67108863,
 19173961,268435455,536870911,153391689,2147483647,
 4294967295,1227133513,17179869183,34359738367,
 9817068105]

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Last modified April 24 20:08 EDT 2024. Contains 371963 sequences. (Running on oeis4.)