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A120883 as a simple table

na(n)
00
11
23
38
413
520
628
739
852
964
1079
1196
12112
13135
14154
15179
16203
17228
18255
19281
20316
21349
22382
23416
24451
25494
26532
27573
28618
29661
30707
31756
32807
33859
34910
35963
361015
371076
381137
391198
401256
411321
421386
431452
441523
451594
461667
471737
481808
491889
501965
512046
522123

[0,1,3,8,13,20,28,39,52,64,79,96,112,135,154,179,
 203,228,255,281,316,349,382,416,451,494,532,573,
 618,661,707,756,807,859,910,963,1015,1076,1137,
 1198,1256,1321,1386,1452,1523,1594,1667,1737,1808,
 1889,1965,2046,2123]