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A360420 as a simple table

na(n)
10
20
30
41
52
66
710
819
927
1043
1158
1285
13105
14143
15175
16226
17266
18334
19386
20475
21534
22641
23717
24854
25933
261092
271187
281385
291482
301713
311820
322091
332203
342511
352637
362998
373110
383516
393647
404118
414226
424761
434865
445461
455576
466221
476319
487088
497138
507953

[0,0,0,1,2,6,10,19,27,43,58,85,105,143,175,226,
 266,334,386,475,534,641,717,854,933,1092,1187,
 1385,1482,1713,1820,2091,2203,2511,2637,2998,3110,
 3516,3647,4118,4226,4761,4865,5461,5576,6221,6319,
 7088,7138,7953]