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A127358 as a simple table

n a(n)
0 1
1 3
2 8
3 21
4 54
5 138
6 350
7 885
8 2230
9 5610
10 14088
11 35346
12 88596
13 221952
14 555738
15 1391061
16 3480870
17 8708610
18 21783680
19 54483510
20 136254964
21 340729788
22 852000828
23 2130354786
24 5326563004

[1,3,8,21,54,138,350,885,2230,5610,14088,35346,
 88596,221952,555738,1391061,3480870,8708610,
 21783680,54483510,136254964,340729788,852000828,
 2130354786,5326563004]

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Last modified July 9 13:27 EDT 2020. Contains 335543 sequences. (Running on oeis4.)