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A307502 as a simple table

na(n)
10
21
36
417
536
664
7108
8172
9240
10340
11444
12612
13744
14980
151164
161504
171704
182172
192388
202964
213288
223968
234272
245272
255520
266624
277104
288276
298640
3010404
3110572
3212480
3313032
3414988
3515300
3618204
3718048
3821004
3921636
4024616
4124648
4229036
4328452
4432768
4533552
4637488

[0,1,6,17,36,64,108,172,240,340,444,612,744,980,
 1164,1504,1704,2172,2388,2964,3288,3968,4272,5272,
 5520,6624,7104,8276,8640,10404,10572,12480,13032,
 14988,15300,18204,18048,21004,21636,24616,24648,
 29036,28452,32768,33552,37488]