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A022180 as a simple table

n a(n)
0 1
1 1
2 1
3 1
4 17
5 1
6 1
7 273
8 273
9 1
10 1
11 4369
12 70161
13 4369
14 1
15 1
16 69905
17 17965585
18 17965585
19 69905
20 1
21 1
22 1118481
23 4599259665
24 73605001745
25 4599259665
26 1118481
27 1
28 1
29 17895697
30 1177411592721
31 301490686407185
32 301490686407185

[1,1,1,1,17,1,1,273,273,1,1,4369,70161,4369,1,1,
 69905,17965585,17965585,69905,1,1,1118481,
 4599259665,73605001745,4599259665,1118481,1,1,
 17895697,1177411592721,301490686407185,
 301490686407185]

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Last modified April 19 01:29 EDT 2019. Contains 322237 sequences. (Running on oeis4.)