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A047963 as a simple table

na(n)
01
14
210
321
437
555
675
7101
8136
9175
10211
11250
12300
13358
14414
15468
16532
17606
18680
19752
20831
21922
221015
231105
241199
251302
261412
271523
281636
291753
301874
312003
322138
332274
342409
352550
362703
372858
383010
393167
403336
413509
423676
433848
444035
454227
464412

[1,4,10,21,37,55,75,101,136,175,211,250,300,358,
 414,468,532,606,680,752,831,922,1015,1105,1199,
 1302,1412,1523,1636,1753,1874,2003,2138,2274,2409,
 2550,2703,2858,3010,3167,3336,3509,3676,3848,4035,
 4227,4412]