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A090647 as a simple table

n a(n)
0 0
1 7
2 70
3 2451
4 168140
5 18724685
6 3065490210
7 692352720199
8 206231512032280
9 78326336951247393
10 36942519649032690350
11 21183831880266815272667
12 14513757566643671668200420
13 11709262576429836293006370421

[0,7,70,2451,168140,18724685,3065490210,
 692352720199,206231512032280,78326336951247393,
 36942519649032690350,21183831880266815272667,
 14513757566643671668200420,
 11709262576429836293006370421]

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Last modified October 19 03:10 EDT 2021. Contains 348073 sequences. (Running on oeis4.)