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A172531 as a simple table

n a(n)
1 0
2 0
3 0
4 228
5 600
6 12357
7 68796
8 275888
9 872532
10 2344025
11 5580762
12 12107196
13 24392446
14 46261537
15 83426400
16 144157632
17 240119696
18 387393921
19 607715342
20 929951100 

[0,0,0,228,600,12357,68796,275888,872532,2344025,
 5580762,12107196,24392446,46261537,83426400,
 144157632,240119696,387393921,607715342,929951100]

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Last modified April 18 06:24 EDT 2024. Contains 371769 sequences. (Running on oeis4.)