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A156907 as a simple table

n a(n)
0 1
1 1
2 2
3 18
4 476
5 38358
6 11363548
7 15060027956
8 92500603618872
9 2483766272252845670
10 279689176516909339664044
11 129570236404446129260308225372
12 244562582019257683819447274838128648

[1,1,2,18,476,38358,11363548,15060027956,
 92500603618872,2483766272252845670,
 279689176516909339664044,
 129570236404446129260308225372,
 244562582019257683819447274838128648]

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Last modified June 30 19:43 EDT 2022. Contains 354945 sequences. (Running on oeis4.)