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A086594 as a simple table

n a(n)
0 2
1 8
2 66
3 536
4 4354
5 35368
6 287298
7 2333752
8 18957314
9 153992264
10 1250895426
11 10161155672
12 82540140802
13 670482282088
14 5446398397506
15 44241669462136
16 359379754094594
17 2919279702218888
18 23713617371845698
19 192628218676984472
20 1564739366787721474

[2,8,66,536,4354,35368,287298,2333752,18957314,
 153992264,1250895426,10161155672,82540140802,
 670482282088,5446398397506,44241669462136,
 359379754094594,2919279702218888,
 23713617371845698,192628218676984472,
 1564739366787721474]

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Last modified April 25 11:20 EDT 2024. Contains 371967 sequences. (Running on oeis4.)