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A177323 as a simple table

n a(n)
1 20
2 3846
3 1173512
4 439192790
5 184619047020
6 83659800759150
7 39956935830445136
8 19840440079542390102
9 10150867545062935511900
10 5318188148539280718247346
11 2840554565353471719458163720
12 1541655842245048541457829216574

[20,3846,1173512,439192790,184619047020,
 83659800759150,39956935830445136,
 19840440079542390102,10150867545062935511900,
 5318188148539280718247346,
 2840554565353471719458163720,
 1541655842245048541457829216574]

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Last modified March 28 10:31 EDT 2024. Contains 371240 sequences. (Running on oeis4.)