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A328890 as a simple table

n a(n)
1 1
2 6
3 18
4 46
5 110
6 254
7 574
8 1278
9 2814
10 6142
11 13310
12 28670
13 61438
14 131070
15 278526
16 589822
17 1245182
18 2621438
19 5505022
20 11534334
21 24117246
22 50331646
23 104857598
24 218103806
25 452984830
26 939524094
27 1946157054
28 4026531838
29 8321499134
30 17179869182
31 35433480190
32 73014444030

[1,6,18,46,110,254,574,1278,2814,6142,13310,28670,
 61438,131070,278526,589822,1245182,2621438,
 5505022,11534334,24117246,50331646,104857598,
 218103806,452984830,939524094,1946157054,
 4026531838,8321499134,17179869182,35433480190,
 73014444030]

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Last modified March 1 22:34 EST 2023. Contains 360781 sequences. (Running on oeis4.)