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A268208 as a simple table

n a(n)
0 1
1 3
2 12
3 52
4 236
5 1108
6 5340
7 26276
8 131484
9 667108
10 3424108
11 17748564
12 92776716
13 488527284
14 2588907708
15 13797337668
16 73901315644
17 397609958596
18 2147904635340
19 11645489540468
20 63349140877356
21 345651184335892
22 1891209255293852

[1,3,12,52,236,1108,5340,26276,131484,667108,
 3424108,17748564,92776716,488527284,2588907708,
 13797337668,73901315644,397609958596,
 2147904635340,11645489540468,63349140877356,
 345651184335892,1891209255293852]

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Last modified April 24 20:08 EDT 2024. Contains 371963 sequences. (Running on oeis4.)