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A225440 as a simple table

na(n)
1378
2630
3990
43240
54095
64950
75460
89180
915400
1019110
1125200
1231878
1337128
1437950
1539060
1652650
1761425
1879800
1997020
20103740
21105570
22122265
23145530
24157080
25161028
26176715
27192510
28221445
29265356
30288420
31304590
32306936
33346528
34437580
35500500
36545490
37583740

[378,630,990,3240,4095,4950,5460,9180,15400,19110,
 25200,31878,37128,37950,39060,52650,61425,79800,
 97020,103740,105570,122265,145530,157080,161028,
 176715,192510,221445,265356,288420,304590,306936,
 346528,437580,500500,545490,583740]