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A190398 as a simple table

n a(n)
1 0
2 4
3 72
4 496
5 2100
6 6708
7 17640
8 40384
9 83376
10 158900
11 284108
12 482160
13 783484
14 1227156
15 1862400
16 2750208
17 3965080
18 5596884
19 7752836
20 10559600
21 14165508
22 18742900
23 24490584
24 31636416
25 40440000
26 51195508
27 64234620
28 79929584

[0,4,72,496,2100,6708,17640,40384,83376,158900,
 284108,482160,783484,1227156,1862400,2750208,
 3965080,5596884,7752836,10559600,14165508,
 18742900,24490584,31636416,40440000,51195508,
 64234620,79929584]

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Last modified August 19 12:01 EDT 2024. Contains 375296 sequences. (Running on oeis4.)