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A089320 as a simple table

n a(n)
1 1
2 12
3 21
4 12
5 215
6 5124
7 42154
8 451248
9 8421543
10 34512480
11 84215439
12 93451248
13 842154391
14 1934512482
15 284215439115
16 51193451248224
17 422842154391154
18 4511934512482248
19 842284215439115425
20 5245119345124822480

[1,12,21,12,215,5124,42154,451248,8421543,
 34512480,84215439,93451248,842154391,1934512482,
 284215439115,51193451248224,422842154391154,
 4511934512482248,842284215439115425,
 5245119345124822480]

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Last modified August 17 08:02 EDT 2022. Contains 356184 sequences. (Running on oeis4.)