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A257476 as a simple table

n a(n)
1 1
2 3
3 20
4 208
5 2944
6 52748
7 1143876
8 29120292
9 851236008
10 28097170632
11 1033540588992
12 41922955409520
13 1858913275469808
14 89451843240275280
15 4642580506992107328
16 258501607230300771072
17 15370815613407241773312
18 972082967929423498417344
19 65152216036788689542930752
20 4613084984991245705602298688

[1,3,20,208,2944,52748,1143876,29120292,851236008,
 28097170632,1033540588992,41922955409520,
 1858913275469808,89451843240275280,
 4642580506992107328,258501607230300771072,
 15370815613407241773312,972082967929423498417344,
 65152216036788689542930752,
 4613084984991245705602298688]

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Last modified April 23 07:08 EDT 2024. Contains 371906 sequences. (Running on oeis4.)