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A022021 as a simple table

n a(n)
0 5
1 20
2 81
3 329
4 1337
5 5434
6 22086
7 89767
8 364852
9 1482917
10 6027219
11 24497237
12 99567416
13 404685244
14 1644816681
15 6685249720
16 27171759829
17 110437838993
18 448867366641
19 1824392026070
20 7415121953942
21 30138277741915
22 122495056843392
23 497873139253657
24 2023572780632275

[5,20,81,329,1337,5434,22086,89767,364852,1482917,
 6027219,24497237,99567416,404685244,1644816681,
 6685249720,27171759829,110437838993,448867366641,
 1824392026070,7415121953942,30138277741915,
 122495056843392,497873139253657,2023572780632275]

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Last modified April 24 10:11 EDT 2024. Contains 371935 sequences. (Running on oeis4.)