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A302317 as a simple table

n a(n)
1 4
2 20
3 65
4 281
5 1144
6 4321
7 18093
8 72746
9 285199
10 1170837
11 4701572
12 18728977
13 76116025
14 305826310
15 1226299079
16 4959269105
17 19941716260
18 80172499973
19 323467010101
20 1301467854854
21 5237685581779
22 21109227250621
23 84964283025692

[4,20,65,281,1144,4321,18093,72746,285199,1170837,
 4701572,18728977,76116025,305826310,1226299079,
 4959269105,19941716260,80172499973,323467010101,
 1301467854854,5237685581779,21109227250621,
 84964283025692]

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Last modified May 24 21:08 EDT 2022. Contains 354043 sequences. (Running on oeis4.)