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A233558 as a simple table

na(n)
21
32
42
53
60
73
84
91
101
114
125
132
143
152
165
176
183
195
205
213
226
237
244
257
260
277
284
297
308
315
320
332
342
350
365
378
389
396
401
414
425
434
441
456
469
4710
487
492
506
518
528
536
542
557
5610
5711
588
593
608
6111
620
6311
648
653
668
6711
6812
699
704
7110
721
733
743
751
7610
774
789
7912
8013
8110
825
8312
843
856
867
876
883
8912
905
9110
9213
9314
9411
956
9614
975
989
9911
10011
1019
1025
10314

[1,2,2,3,0,3,4,1,1,4,5,2,3,2,5,6,3,5,5,3,6,7,4,7,
 0,7,4,7,8,5,0,2,2,0,5,8,9,6,1,4,5,4,1,6,9,10,7,2,
 6,8,8,6,2,7,10,11,8,3,8,11,0,11,8,3,8,11,12,9,4,
 10,1,3,3,1,10,4,9,12,13,10,5,12,3,6,7,6,3,12,5,10,
 13,14,11,6,14,5,9,11,11,9,5,14]