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A371869 as a simple table

n a(n)
1 0
2 0
3 0
4 1
5 1
6 4
7 6
8 26
9 74
10 356
11 1655
12 9750
13 62009
14 448498
15 3554505
16 31000909
17 294772655
18 3047952802
19 34135465140 

[0,0,0,1,1,4,6,26,74,356,1655,9750,62009,448498,
 3554505,31000909,294772655,3047952802,34135465140]

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Last modified August 4 19:13 EDT 2024. Contains 374925 sequences. (Running on oeis4.)