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A071411 as a simple table

na(n)
11
20
3-1
4-2
50
63
78
813
921
1034
1147
1264
1384
14105
15128
16156
17189
18223
19262
20303
21344
22390
23439
24493
25554
26617
27681
28748
29815
30884
31966
321051
331140
341230
351329
361429
371534
381643
391755
401872
411994
422117
432248
442379
452513
462648
472794
482951
493110
503270
513433
523600
533767
543943
554124
564310
574501
584692
594888

[1,0,-1,-2,0,3,8,13,21,34,47,64,84,105,128,156,
 189,223,262,303,344,390,439,493,554,617,681,748,
 815,884,966,1051,1140,1230,1329,1429,1534,1643,
 1755,1872,1994,2117,2248,2379,2513,2648,2794,2951,
 3110,3270,3433,3600,3767,3943,4124,4310,4501,4692,
 4888]