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A300664 as a simple table

na(n)
1120
2840
31080
41320
51512
61560
71848
81890
91920
102040
112184
122280
132376
142688
152760
162856
173000
183192
193480
203720
214440
224920
235160
245640
255880
266360
277080
287320
297560
308040
318520
328760
339240
349480
359720
369960
3710680
3810920
3911640
4011880
4112120
4212360

[120,840,1080,1320,1512,1560,1848,1890,1920,2040,
 2184,2280,2376,2688,2760,2856,3000,3192,3480,3720,
 4440,4920,5160,5640,5880,6360,7080,7320,7560,8040,
 8520,8760,9240,9480,9720,9960,10680,10920,11640,
 11880,12120,12360]