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A298190 as a simple table

n a(n)
1 4
2 26
3 92
4 354
5 1385
6 5450
7 21362
8 83805
9 328854
10 1290664
11 5064904
12 19876664
13 78004135
14 306122212
15 1201352626
16 4714619350
17 18502172075
18 72610411677
19 284954178325
20 1118281595938
21 4388613371256
22 17222788578148
23 67589559640000

[4,26,92,354,1385,5450,21362,83805,328854,1290664,
 5064904,19876664,78004135,306122212,1201352626,
 4714619350,18502172075,72610411677,284954178325,
 1118281595938,4388613371256,17222788578148,
 67589559640000]

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Last modified January 26 22:13 EST 2023. Contains 359836 sequences. (Running on oeis4.)