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A298448 as a simple table

n a(n)
1 1
2 4
3 4
4 16
5 48
6 88
7 240
8 704
9 1600
10 4032
11 11072
12 27392
13 68608
14 180736
15 459776
16 1160704
17 2999296
18 7682048
19 19525632
20 50081792
21 128339968
22 327434240
23 837861376
24 2145583104
25 5483266048
26 14023229440
27 35888758784
28 91776090112
29 234707222528

[1,4,4,16,48,88,240,704,1600,4032,11072,27392,
 68608,180736,459776,1160704,2999296,7682048,
 19525632,50081792,128339968,327434240,837861376,
 2145583104,5483266048,14023229440,35888758784,
 91776090112,234707222528]

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Last modified December 8 05:15 EST 2021. Contains 349590 sequences. (Running on oeis4.)