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A008931 as a simple table

n a(n)
0 1
1 3
2 45
3 936
4 22572
5 592515
6 16434495
7 473825700
8 14058408519
9 426438391743
10 13164565835421
11 412255067017248
12 13064028812911440
13 418149414542496168
14 13498863325944967656
15 439006511643775469856
16 14369623854340007790108
17 473027210589699351461700

[1,3,45,936,22572,592515,16434495,473825700,
 14058408519,426438391743,13164565835421,
 412255067017248,13064028812911440,
 418149414542496168,13498863325944967656,
 439006511643775469856,14369623854340007790108,
 473027210589699351461700]

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Last modified April 23 14:15 EDT 2019. Contains 322386 sequences. (Running on oeis4.)