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A007807 as a simple table

n a(n)
1 0
2 0
3 1
4 3
5 11
6 59
7 779
8 47579
9 37159979
10 1768109008379
11 65702897157329640779
12 116169884340604934905464739377179
13 7632697963609645128663145969343357330533515068777579

[0,0,1,3,11,59,779,47579,37159979,1768109008379,
 65702897157329640779,
 116169884340604934905464739377179,
 76326979636096451286631459693433573305335150687775\
 79]

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Last modified March 29 08:59 EDT 2024. Contains 371268 sequences. (Running on oeis4.)