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A230551 as a simple table

n a(n)
1 1
2 2
3 4
4 10
5 24
6 62
7 154
8 396
9 992
10 2536
11 6376
12 16238
13 40914
14 103954
15 262298
16 665478
17 1680726
18 4260262
19 10766470
20 27274444 

[1,2,4,10,24,62,154,396,992,2536,6376,16238,40914,
 103954,262298,665478,1680726,4260262,10766470,
 27274444]

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Last modified April 24 14:32 EDT 2024. Contains 371960 sequences. (Running on oeis4.)