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A014642 as a simple table

na(n)
00
18
240
396
4176
5280
6408
7560
8736
9936
101160
111408
121680
131976
142296
152640
163008
173400
183816
194256
204720
215208
225720
236256
246816
257400
268008
278640
289296
299976
3010680
3111408
3212160
3312936
3413736
3514560
3615408
3716280
3817176
3918096
4019040
4120008
4221000
4322016

[0,8,40,96,176,280,408,560,736,936,1160,1408,1680,
 1976,2296,2640,3008,3400,3816,4256,4720,5208,5720,
 6256,6816,7400,8008,8640,9296,9976,10680,11408,
 12160,12936,13736,14560,15408,16280,17176,18096,
 19040,20008,21000,22016]