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A220317 as a simple table

n a(n)
1 2
2 24
3 353
4 3167
5 28215
6 237144
7 1944692
8 15735116
9 126513306
10 1014237718
11 8120891182
12 64989221681
13 519982144806
14 4160063431147

[2,24,353,3167,28215,237144,1944692,15735116,
 126513306,1014237718,8120891182,64989221681,
 519982144806,4160063431147]

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Last modified November 28 02:51 EST 2022. Contains 358406 sequences. (Running on oeis4.)