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A307558 as a simple table

na(n)
11
22
31
43
53
63
73
83
93
101
113
123
133
143
153
163
174
183
193
203
213
223
237
243
253
263
273
283
297
303
313
323
333
343
3510
363
373
383
393
4010
413
423
433
4413
453
463
473
4813
493
503
513
5216
533
543
5516
563
573
5816
593
603
6116
623
633
6416
653
663
6716
683
693
7016
713
723
7316
743
753
7619
773
7819
793
803
8116
823

[1,2,1,3,3,3,3,3,3,1,3,3,3,3,3,3,4,3,3,3,3,3,7,3,
 3,3,3,3,7,3,3,3,3,3,10,3,3,3,3,10,3,3,3,13,3,3,3,
 13,3,3,3,16,3,3,16,3,3,16,3,3,16,3,3,16,3,3,16,3,
 3,16,3,3,16,3,3,19,3,19,3,3,16,3]