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A045820 as a simple table

na(n)
02
124
2124
3368
4746
51288
62220
73536
84964
96904
109536
1112112
1215630
1320592
1424588
1529632
1637472
1743296
1850492
1961456
2068724
2179560
2295404
23104352
24118226
25137392
26148636
27167920
28191904
29204712

[2,24,124,368,746,1288,2220,3536,4964,6904,9536,
 12112,15630,20592,24588,29632,37472,43296,50492,
 61456,68724,79560,95404,104352,118226,137392,
 148636,167920,191904,204712]