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A223720 as a simple table

n a(n)
1 22
2 484
3 5883
4 46613
5 273562
6 1285547
7 5087912
8 17557701
9 54161878
10 152154419
11 394849354
12 957192985
13 2187192034
14 4745347460
15 9834757897
16 19568773673
17 37541913638
18 69694254022
19 125590862829
20 220277446621
21 376922731034

[22,484,5883,46613,273562,1285547,5087912,
 17557701,54161878,152154419,394849354,957192985,
 2187192034,4745347460,9834757897,19568773673,
 37541913638,69694254022,125590862829,220277446621,
 376922731034]

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Last modified January 22 23:50 EST 2022. Contains 350504 sequences. (Running on oeis4.)