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A272954 as a simple table

n a(n)
1 4
2 21
3 24
4 60
5 210
6 637
7 1840
8 5792
9 18556
10 54034
11 160246
12 499140
13 1501706
14 4627363
15 13954490
16 43064736
17 131174878
18 399170874
19 1222825766
20 3739040310
21 11456400210
22 35068696769
23 107362206600
24 329271410590
25 1009129910706
26 3096269613087

[4,21,24,60,210,637,1840,5792,18556,54034,160246,
 499140,1501706,4627363,13954490,43064736,
 131174878,399170874,1222825766,3739040310,
 11456400210,35068696769,107362206600,329271410590,
 1009129910706,3096269613087]

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Last modified May 17 12:26 EDT 2024. Contains 372600 sequences. (Running on oeis4.)