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A298657 as a simple table

n a(n)
1 3
2 23
3 23
4 85
5 177
6 431
7 876
8 2137
9 5002
10 11687
11 27591
12 64253
13 150967
14 353682
15 830580
16 1954490
17 4575013
18 10742553
19 25221766
20 59150366
21 138829820
22 325959550
23 764905062
24 1795278490
25 4214144288
26 9890202526
27 23212413440
28 54483362577

[3,23,23,85,177,431,876,2137,5002,11687,27591,
 64253,150967,353682,830580,1954490,4575013,
 10742553,25221766,59150366,138829820,325959550,
 764905062,1795278490,4214144288,9890202526,
 23212413440,54483362577]

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Last modified February 19 03:54 EST 2020. Contains 332032 sequences. (Running on oeis4.)