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A156220 as a simple table

n a(n)
0 -2
1 -2
2 3
3 -2
4 3
5 -1
6 -2
7 3
8 -1
9 109
10 -2
11 3
12 -1
13 325
14 1555523
15 -2
16 3
17 -1
18 973
19 32671835
20 49621794478165
21 -2
22 3
23 -1
24 2917
25 686126051
26 15630874866123949
27 27744919164118690798376051
28 -2
29 3
30 -1
31 8749
32 14408699579
33 4923725784550050421
34 270929135785330782929292449579
35 2134369240927848351630724472718209102550421

[-2,-2,3,-2,3,-1,-2,3,-1,109,-2,3,-1,325,1555523,
 -2,3,-1,973,32671835,49621794478165,-2,3,-1,2917,
 686126051,15630874866123949,
 27744919164118690798376051,-2,3,-1,8749,
 14408699579,4923725784550050421,
 270929135785330782929292449579,
 2134369240927848351630724472718209102550421]

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Last modified March 29 02:23 EDT 2024. Contains 371264 sequences. (Running on oeis4.)