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A277391 as a simple table

n a(n)
0 1
1 3
2 34
3 654
4 17688
5 616120
6 26252496
7 1322624016
8 76909665664
9 5069558461824
10 373529452588800
11 30422117430022912
12 2713911389090970624
13 263171888496899625984
14 27563036166079327578112
15 3100736138961250867968000
16 372888702864658105915244544 

[1,3,34,654,17688,616120,26252496,1322624016,
 76909665664,5069558461824,373529452588800,
 30422117430022912,2713911389090970624,
 263171888496899625984,27563036166079327578112,
 3100736138961250867968000,
 372888702864658105915244544]

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Last modified April 25 12:53 EDT 2024. Contains 371969 sequences. (Running on oeis4.)