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A049818 as a simple table

na(n)
10
20
31
42
56
68
715
822
930
1038
1155
1264
1384
14102
15119
16138
17168
18192
19229
20254
21284
22318
23369
24400
25444
26492
27541
28586
29654
30696
31767
32826
33890
34962
351029
361086
371174
381256
391341
401412
411518
421590
431703
441792
451880
461986
472117

[0,0,1,2,6,8,15,22,30,38,55,64,84,102,119,138,168,
 192,229,254,284,318,369,400,444,492,541,586,654,
 696,767,826,890,962,1029,1086,1174,1256,1341,1412,
 1518,1590,1703,1792,1880,1986,2117]