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A020503 as a simple table

n a(n)
0 -4
1 -5
2 -3
3 13
4 17
5 205
6 21
7 3277
8 257
9 4033
10 341
11 838861
12 241
13 13421773
14 5461
15 80581
16 65537
17 3435973837
18 4161
19 54975581389
20 61681
21 20647621
22 1398101
23 14073748835533
24 65281
25 1098438933505
26 22369621
27 68719214593

[-4,-5,-3,13,17,205,21,3277,257,4033,341,838861,
 241,13421773,5461,80581,65537,3435973837,4161,
 54975581389,61681,20647621,1398101,14073748835533,
 65281,1098438933505,22369621,68719214593]

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Last modified June 29 17:26 EDT 2024. Contains 373855 sequences. (Running on oeis4.)