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A253840 as a simple table

na(n)
1709704
2697720
31364704
42282367
5350208
6427510
7262418
8145955
9159924
10165378
11151496
12166465
13184418
14173844
15187098
16210280
17195700
18212600
19237946
20221027
21242064
22271568
23250134
24276274
25302350
26286349
27315658
28340910
29325612
30359818

[709704,697720,1364704,2282367,350208,427510,
 262418,145955,159924,165378,151496,166465,184418,
 173844,187098,210280,195700,212600,237946,221027,
 242064,271568,250134,276274,302350,286349,315658,
 340910,325612,359818]