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A301007 as a simple table

na(n)
01
14
210
320
435
555
680
7108
8137
9170
10214
11272
12330
13375
14429
15500
16578
17647
18717
19823
20917
21985
221070
231181
241316
251429
261524
271662
281790
291899
302053
312212
322364
332482
342616
352820
362981
373110
383292
393503
403683
413832
424012
434270
444482
454640
464848

[1,4,10,20,35,55,80,108,137,170,214,272,330,375,
 429,500,578,647,717,823,917,985,1070,1181,1316,
 1429,1524,1662,1790,1899,2053,2212,2364,2482,2616,
 2820,2981,3110,3292,3503,3683,3832,4012,4270,4482,
 4640,4848]