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A056277 as a simple table

n a(n)
1 1
2 1
3 4
4 13
5 51
6 197
7 875
8 4096
9 20643
10 109246
11 601491
12 3402911
13 19628063
14 114699438
15 676207572
16 4010086352
17 23874362199
18 142508702805
19 852124263683
20 5101098123207
21 30560194492576
22 183176169456214

[1,1,4,13,51,197,875,4096,20643,109246,601491,
 3402911,19628063,114699438,676207572,4010086352,
 23874362199,142508702805,852124263683,
 5101098123207,30560194492576,183176169456214]

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Last modified April 24 18:17 EDT 2024. Contains 371962 sequences. (Running on oeis4.)