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A303644 as a simple table

na(n)
10
20
30
44
54
612
724
832
940
1048
1168
1292
13100
14120
15136
16168
17192
18220
19244
20268
21312
22336
23376
24420
25444
26484
27524
28576
29624
30664
31724
32764
33820
34868
35912
36992
371040
381116
391156
401220
411304
421368
431440
441496
451564
461660
471732
481816
491888
501960
512032
522116
532220
542308

[0,0,0,4,4,12,24,32,40,48,68,92,100,120,136,168,
 192,220,244,268,312,336,376,420,444,484,524,576,
 624,664,724,764,820,868,912,992,1040,1116,1156,
 1220,1304,1368,1440,1496,1564,1660,1732,1816,1888,
 1960,2032,2116,2220,2308]