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A006074 as a simple table

n a(n)
1 1
2 3
3 4
4 14
5 30
6 107
7 318
8 1116
9 3743
10 13240
11 46476
12 166358
13 596638
14 2158829
15 7839845
16 28616815
17 104814161
18 385269397
19 1420242629
20 5249877583
21 19452536934
22 72237904034

[1,3,4,14,30,107,318,1116,3743,13240,46476,166358,
 596638,2158829,7839845,28616815,104814161,
 385269397,1420242629,5249877583,19452536934,
 72237904034]

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Last modified April 25 13:12 EDT 2024. Contains 371969 sequences. (Running on oeis4.)