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A030221 as a simple table

n a(n)
0 1
1 6
2 29
3 139
4 666
5 3191
6 15289
7 73254
8 350981
9 1681651
10 8057274
11 38604719
12 184966321
13 886226886
14 4246168109
15 20344613659
16 97476900186
17 467039887271
18 2237722536169
19 10721572793574
20 51370141431701
21 246129134364931
22 1179275530392954
23 5650248517599839

[1,6,29,139,666,3191,15289,73254,350981,1681651,
 8057274,38604719,184966321,886226886,4246168109,
 20344613659,97476900186,467039887271,
 2237722536169,10721572793574,51370141431701,
 246129134364931,1179275530392954,5650248517599839]

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Last modified April 19 16:38 EDT 2024. Contains 371794 sequences. (Running on oeis4.)