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A231521 as a simple table

n a(n)
1 21
2 1069
3 25556
4 680302
5 17572772
6 451200772
7 11683058939
8 302190345444
9 7806399525348
10 201765495180944
11 5215449996133433
12 134798889001969231
13 3484039440752712049
14 90050899758881308054
15 2327507605574582278738 

[21,1069,25556,680302,17572772,451200772,
 11683058939,302190345444,7806399525348,
 201765495180944,5215449996133433,
 134798889001969231,3484039440752712049,
 90050899758881308054,2327507605574582278738]

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Last modified June 1 15:30 EDT 2024. Contains 373025 sequences. (Running on oeis4.)