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A187380 as a simple table

na(n)
10
20
324
4264
5832
61810
73154
84864
96940
109382
1112190
1215364
1318904
1422810
1527082
1631720
1736724
1842094
1947830
2053932
2160400
2267234
2374434
2482000
2589932
2698230
27106894
28115924
29125320
30135082
31145210
32155704
33166564
34177790
35189382
36201340

[0,0,24,264,832,1810,3154,4864,6940,9382,12190,
 15364,18904,22810,27082,31720,36724,42094,47830,
 53932,60400,67234,74434,82000,89932,98230,106894,
 115924,125320,135082,145210,155704,166564,177790,
 189382,201340]