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A213041 as a simple table

na(n)
01
12
27
312
421
530
643
756
873
990
10111
11132
12157
13182
14211
15240
16273
17306
18343
19380
20421
21462
22507
23552
24601
25650
26703
27756
28813
29870
30931
31992
321057
331122
341191
351260
361333
371406
381483
391560
401641
411722
421807
431892
441981
452070
462163
472256

[1,2,7,12,21,30,43,56,73,90,111,132,157,182,211,
 240,273,306,343,380,421,462,507,552,601,650,703,
 756,813,870,931,992,1057,1122,1191,1260,1333,1406,
 1483,1560,1641,1722,1807,1892,1981,2070,2163,2256]