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A218884 as a simple table

n a(n)
1 0
2 0
3 0
4 0
5 0
6 0
7 0
8 0
9 0
10 0
11 0
12 4
13 101
14 1505
15 18360
16 224164
17 3319006
18 56201769

[0,0,0,0,0,0,0,0,0,0,0,4,101,1505,18360,224164,
 3319006,56201769]

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Last modified May 8 17:32 EDT 2024. Contains 372340 sequences. (Running on oeis4.)