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A022015 as a simple table

n a(n)
0 2
1 6
2 19
3 61
4 197
5 633
6 2036
7 6548
8 21061
9 67737
10 217861
11 700699
12 2253638
13 7248306
14 23312507
15 74979305
16 241153657
17 775615161
18 2494587424
19 8023265560
20 25804984685
21 82995786381
22 266936820209
23 858540765611

[2,6,19,61,197,633,2036,6548,21061,67737,217861,
 700699,2253638,7248306,23312507,74979305,
 241153657,775615161,2494587424,8023265560,
 25804984685,82995786381,266936820209,858540765611]

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Last modified April 19 18:05 EDT 2024. Contains 371798 sequences. (Running on oeis4.)