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A172530 as a simple table

n a(n)
1 0
2 0
3 6
4 208
5 600
6 3252
7 10584
8 27584
9 61992
10 125300
11 233772
12 409584
13 682084
14 1089172
15 1678800
16 2510592
17 3657584
18 5208084
19 7267652
20 9961200
21 13435212
22 17860084
23 23432584
24 30378432
25 38955000
26 49454132
27 62205084

[0,0,6,208,600,3252,10584,27584,61992,125300,
 233772,409584,682084,1089172,1678800,2510592,
 3657584,5208084,7267652,9961200,13435212,17860084,
 23432584,30378432,38955000,49454132,62205084]

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Last modified May 4 11:01 EDT 2024. Contains 372240 sequences. (Running on oeis4.)