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A068812 as a simple table

na(n)
145
255
3990
41485
54005
64950
75050
85995
98515
109180
11285390
12499500
13500500
14714610
151719585
163064050
176935950
188280415
1949000050
2049995000
2150005000
2250999950
231449668935
244999950000
255000050000
268550331065
27122307408405
28122963116095

[45,55,990,1485,4005,4950,5050,5995,8515,9180,
 285390,499500,500500,714610,1719585,3064050,
 6935950,8280415,49000050,49995000,50005000,
 50999950,1449668935,4999950000,5000050000,
 8550331065,122307408405,122963116095]