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A273949 as a simple table

n a(n)
1 3
2 17
3 61
4 193
5 257
6 7321
7 15361
8 51329
9 65537
10 163841
11 6304673
12 15190529
13 70254593
14 1691123713
15 1760464897
16 3221225473
17 3489660929
18 4696846849
19 6874464257
20 53401878529
21 111489577217
22 149300051969
23 184683593729
24 206158430209
25 447600088289
26 1819992391681

[3,17,61,193,257,7321,15361,51329,65537,163841,
 6304673,15190529,70254593,1691123713,1760464897,
 3221225473,3489660929,4696846849,6874464257,
 53401878529,111489577217,149300051969,
 184683593729,206158430209,447600088289,
 1819992391681]

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