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A006824 as a simple table

n a(n)
4 1
5 1
6 4
7 14
8 129
9 1980
10 62611
11 2806490
12 158937213
13 10773251972
14 855658082615
15 78558949838723
16 8251166737356319
17 982806379842257309
18 131756174189661102281
19 19748565896506014747623
20 3289970433888731383271400
21 605948436052375098046655323
22 122796503871896458570959144266

[1,1,4,14,129,1980,62611,2806490,158937213,
 10773251972,855658082615,78558949838723,
 8251166737356319,982806379842257309,
 131756174189661102281,19748565896506014747623,
 3289970433888731383271400,
 605948436052375098046655323,
 122796503871896458570959144266]

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Last modified April 24 20:08 EDT 2024. Contains 371963 sequences. (Running on oeis4.)