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A308236 as a simple table

na(n)
10
20
36
40
516
624
762
842
9154
10130
11304
12280
13530
14504
15990
16820
171448
181452
192260
202040
213318
223080
234634
244398
256256
266006
278674
287952
2911046
3010840
3114424
3213608
3318402
3417544
3522980
3622128
3728248
3827360
3935208
4033330
4142040
4241202
4350864
4448840
4560796

[0,0,6,0,16,24,62,42,154,130,304,280,530,504,990,
 820,1448,1452,2260,2040,3318,3080,4634,4398,6256,
 6006,8674,7952,11046,10840,14424,13608,18402,
 17544,22980,22128,28248,27360,35208,33330,42040,
 41202,50864,48840,60796]