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A131919 as a simple table

na(n)
01
13
23
35
43
55
67
74
84
97
109
115
125
135
149
1511
166
176
186
196
2011
2113
227
237
247
257
267
2713
2815
298
308
318
328
338
348
3515
3617
379
389
399
409
419
429
439
4417
4519
4610
4710
4810
4910
5010
5110
5210
5310
5419

[1,3,3,5,3,5,7,4,4,7,9,5,5,5,9,11,6,6,6,6,11,13,7,
 7,7,7,7,13,15,8,8,8,8,8,8,15,17,9,9,9,9,9,9,9,17,
 19,10,10,10,10,10,10,10,10,19]