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A207389 as a simple table

n a(n)
1 21
2 441
3 2307
4 7561
5 19319
6 42167
7 82477
8 148743
9 251937
10 405885
11 627663
12 938013
13 1361779
14 1928363
15 2672201
16 3633259
17 4857549
18 6397665
19 8313339
20 10672017
21 13549455
22 17030335
23 21208901
24 26189615
25 32087833
26 39030501
27 47156871
28 56619237

[21,441,2307,7561,19319,42167,82477,148743,251937,
 405885,627663,938013,1361779,1928363,2672201,
 3633259,4857549,6397665,8313339,10672017,13549455,
 17030335,21208901,26189615,32087833,39030501,
 47156871,56619237]

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Last modified March 28 21:57 EDT 2024. Contains 371254 sequences. (Running on oeis4.)