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A302647 as a simple table

na(n)
10
20
32
46
518
636
772
8120
9200
10300
11450
12630
13882
141176
151568
162016
172592
183240
194050
204950
216050
227260
238712
2410296
2512168
2614196
2716562
2819110
2922050
3025200
3128800
3232640
3336992
3441616
3546818
3652326
3758482
3864980
3972200
4079800
4188200
4297020
43106722

[0,0,2,6,18,36,72,120,200,300,450,630,882,1176,
 1568,2016,2592,3240,4050,4950,6050,7260,8712,
 10296,12168,14196,16562,19110,22050,25200,28800,
 32640,36992,41616,46818,52326,58482,64980,72200,
 79800,88200,97020,106722]