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A220006 as a simple table

n a(n)
1 20
2 43
3 479
4 4474
5 32959
6 204056
7 1209492
8 7316891
9 44430342
10 260942687
11 1458406289
12 7769314333
13 39698813306
14 195484409069
15 930466275825
16 4292158352171
17 19240147010037
18 84029266162705
19 358361605456031

[20,43,479,4474,32959,204056,1209492,7316891,
 44430342,260942687,1458406289,7769314333,
 39698813306,195484409069,930466275825,
 4292158352171,19240147010037,84029266162705,
 358361605456031]

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Last modified June 28 17:31 EDT 2022. Contains 354907 sequences. (Running on oeis4.)