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A269644 as a simple table

n a(n)
1 20
2 969
3 9928
4 55225
5 216528
6 675151
7 1789528
8 4200933
9 8974480
10 17780443
11 33120936
12 58606993
13 99291088
14 162060135
15 256094008
16 393394621
17 589390608
18 863622643
19 1240514440
20 1750234473
21 2429653456
22 3323402623
23 4485037848

[20,969,9928,55225,216528,675151,1789528,4200933,
 8974480,17780443,33120936,58606993,99291088,
 162060135,256094008,393394621,589390608,863622643,
 1240514440,1750234473,2429653456,3323402623,
 4485037848]

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Last modified January 18 07:00 EST 2022. Contains 350454 sequences. (Running on oeis4.)