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A287800 as a simple table

na(n)
1900
22400
33840
46480
57200
611520
713056
839168
942240
1079200
1183232
1296000
13126720
14145200
15153600
16157440
17174240
18195840
19207360
20288000
21300000
22317520
23326592
24387840
25435600
26460800
27472320
28480000
29900000
30971520
311056000
321161600
331163520
341228800
351440000

[900,2400,3840,6480,7200,11520,13056,39168,42240,
 79200,83232,96000,126720,145200,153600,157440,
 174240,195840,207360,288000,300000,317520,326592,
 387840,435600,460800,472320,480000,900000,971520,
 1056000,1161600,1163520,1228800,1440000]