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A306987 as a simple table

na(n)
120
288
3104
4272
5304
6368
7464
8550
9572
10650
11748
12945
131184
141312
151376
161430
171504
181575
191696
201870
211888
221952
232002
242090
252205
262210
272470
282530
292584
302990
313128
323190
333230
343410
353465
363496
373770
383944
394070
404095
414216
424288
434408
444510
454544
464672

[20,88,104,272,304,368,464,550,572,650,748,945,
 1184,1312,1376,1430,1504,1575,1696,1870,1888,1952,
 2002,2090,2205,2210,2470,2530,2584,2990,3128,3190,
 3230,3410,3465,3496,3770,3944,4070,4095,4216,4288,
 4408,4510,4544,4672]