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A220447 as a simple table

n a(n)
1 1
2 1
3 1
4 1
5 19
6 73
7 331
8 43
9 281
10 4511
11 10873
12 322921
13 12179
14 720817
15 538759
16 87995911
17 1185403
18 37171235
19 46336951
20 6986985769
21 2602576465
22 243540693677
23 181777598557
24 13097400661955
25 135996437150855
26 8249498995171439
27 56213506181241631
28 601615828819880125
29 10365435567354511181

[1,1,1,1,19,73,331,43,281,4511,10873,322921,12179,
 720817,538759,87995911,1185403,37171235,46336951,
 6986985769,2602576465,243540693677,181777598557,
 13097400661955,135996437150855,8249498995171439,
 56213506181241631,601615828819880125,
 10365435567354511181]

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Last modified August 21 18:26 EDT 2019. Contains 326168 sequences. (Running on oeis4.)