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A043972 as a simple table

na(n)
115
255
396
4143
5177
6217
7258
8298
9339
10379
11420
12460
13503
14541
15582
16622
17663
18703
19744
20784
21825
22872
23906
24946
25987
261027
271068
281108
291149
301189
311295
321311
331351
341392
351432
361473
371513
381554
391601
401635
411675
421716

[15,55,96,143,177,217,258,298,339,379,420,460,503,
 541,582,622,663,703,744,784,825,872,906,946,987,
 1027,1068,1108,1149,1189,1295,1311,1351,1392,1432,
 1473,1513,1554,1601,1635,1675,1716]