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A049057 as a simple table

na(n)
020
140
252
360
4104
5120
6156
7312
8480
9488
10780
111248
121464
131560
145856
156240
167320
177680
188168
199744
2013260
2119968
2224504
2326520
2429280
2593696
2698016
2799840
28106080
29122520
30124440
31468480
32490080
33497760
341568256
351697280
362082840
377841280

[20,40,52,60,104,120,156,312,480,488,780,1248,
 1464,1560,5856,6240,7320,7680,8168,9744,13260,
 19968,24504,26520,29280,93696,98016,99840,106080,
 122520,124440,468480,490080,497760,1568256,
 1697280,2082840,7841280]