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A271222 as a simple table

n a(n)
0 0
1 2
2 5
3 5
4 59
5 221
6 221
7 1679
8 3866
9 16988
10 56354
11 174452
12 174452
13 705893
14 705893
15 10271831
16 24620738
17 110714180
18 239854343
19 627274832
20 2951797766
21 2951797766
22 2951797766
23 65713916984
24 159857095811
25 442286632292

[0,2,5,5,59,221,221,1679,3866,16988,56354,174452,
 174452,705893,705893,10271831,24620738,110714180,
 239854343,627274832,2951797766,2951797766,
 2951797766,65713916984,159857095811,442286632292]

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Last modified April 24 22:17 EDT 2024. Contains 371964 sequences. (Running on oeis4.)