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A136519 as a simple table

n a(n)
0 1
1 3
2 15
3 156
4 4556
5 417384
6 128004240
7 136874853504
8 523288667468832
9 7257782720507161152
10 368292386875012729754240
11 68761030015590030510485191680
12 47447175348985315294381264871833600 

[1,3,15,156,4556,417384,128004240,136874853504,
 523288667468832,7257782720507161152,
 368292386875012729754240,
 68761030015590030510485191680,
 47447175348985315294381264871833600]

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Last modified April 24 15:57 EDT 2024. Contains 371961 sequences. (Running on oeis4.)