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A249547 as a simple table

na(n)
00
12
27
314
424
536
651
768
888
9110
10135
11162
12192
13224
14259
15296
16336
17378
18423
19470
20520
21572
22627
23684
24744
25806
26871
27938
281008
291080
301155
311232
321312
331394
341479
351566
361656
371748
381843
391940
402040
412142
422247
432354
442464
452576
462691
472808
482928
493050

[0,2,7,14,24,36,51,68,88,110,135,162,192,224,259,
 296,336,378,423,470,520,572,627,684,744,806,871,
 938,1008,1080,1155,1232,1312,1394,1479,1566,1656,
 1748,1843,1940,2040,2142,2247,2354,2464,2576,2691,
 2808,2928,3050]