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A253325 as a simple table

n a(n)
1 3249
2 17197
3 86922
4 185672
5 503944
6 797324
7 1660088
8 2516513
9 4869987
10 7734273
11 14919670
12 25495092
13 49930717
14 90999544
15 180464019
16 343236331
17 684939660
18 1334617667
19 2669247347
20 5267675675
21 10540870453
22 20938024856
23 41896374843

[3249,17197,86922,185672,503944,797324,1660088,
 2516513,4869987,7734273,14919670,25495092,
 49930717,90999544,180464019,343236331,684939660,
 1334617667,2669247347,5267675675,10540870453,
 20938024856,41896374843]

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Last modified July 6 15:30 EDT 2022. Contains 355110 sequences. (Running on oeis4.)