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A277324 as a simple table

na(n)
02
16
218
330
490
5270
6450
7210
8630
96750
1020250
119450
1215750
1347250
1422050
152310
166930
17330750
183543750
191653750
204961250
2153156250
2224806250
23727650
241212750
2557881250
26173643750
2718191250
288489250
2925467750
302668050
3130030
3290090
3340020750
341910081250
35891371250
369550406250
37455814843750
38212713593750

[2,6,18,30,90,270,450,210,630,6750,20250,9450,
 15750,47250,22050,2310,6930,330750,3543750,
 1653750,4961250,53156250,24806250,727650,1212750,
 57881250,173643750,18191250,8489250,25467750,
 2668050,30030,90090,40020750,1910081250,891371250,
 9550406250,455814843750,212713593750]