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A147028 as a simple table

n a(n)
1 1
2 1
3 1
4 1
5 1
6 1
7 1
8 1
9 177
10 345
11 2505
12 5729
13 75825
14 187849
15 6215801
16 19558129
17 3054260057
18 12287993577
19 1988214768097
20 9763619895845
21 2194779047865427
22 13072631855408245

[1,1,1,1,1,1,1,1,177,345,2505,5729,75825,187849,
 6215801,19558129,3054260057,12287993577,
 1988214768097,9763619895845,2194779047865427,
 13072631855408245]

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Last modified January 21 18:19 EST 2022. Contains 350479 sequences. (Running on oeis4.)