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A038408 as a simple table

na(n)
01
14
210
321
436
555
679
7106
8138
9175
10215
11260
12309
13362
14420
15482
16548
17618
18693
19772
20855
21943
221034
231130
241231
251335
261444
271557
281674
291796
301922
312052
322186
332325
342468
352615
362767
372922
383082
393247
403415
413588
423765
433946
444132
454322
464516

[1,4,10,21,36,55,79,106,138,175,215,260,309,362,
 420,482,548,618,693,772,855,943,1034,1130,1231,
 1335,1444,1557,1674,1796,1922,2052,2186,2325,2468,
 2615,2767,2922,3082,3247,3415,3588,3765,3946,4132,
 4322,4516]