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A183109 as a simple table

n a(n)
1 1
2 1
3 7
4 1
5 25
6 265
7 1
8 79
9 2161
10 41503
11 1
12 241
13 16081
14 693601
15 24997921
16 1
17 727
18 115465
19 10924399
20 831719761
21 57366997447
22 1
23 2185
24 816985
25 167578321
26 26666530801
27 3776451407065
28 505874809287625

[1,1,7,1,25,265,1,79,2161,41503,1,241,16081,
 693601,24997921,1,727,115465,10924399,831719761,
 57366997447,1,2185,816985,167578321,26666530801,
 3776451407065,505874809287625]

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Last modified May 15 21:53 EDT 2024. Contains 372549 sequences. (Running on oeis4.)