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A278149 as a simple table

na(n)
12
23
33
44
55
65
74
85
97
105
115
127
135
146
159
167
178
187
197
208
217
229
236
247
2511
269
277
288
297
307
318
327
339
3411
357
368
3713
3811
399
4011
4110
428
4312
449
459
4612
478
4810
4911
509
5111
5213
538
549
5515
5613
5711
589
5911
6010
6111
6213
6312
649
659
6612
6713
6811
6910
7011
719
7211
7313
7415
759
7610
7717
7815
7913
8011
8114
8213
8311
8410
8511
8613
8712
8816
8911
9011
9116
9212
9313
9411
9510
9611
9713
9814
9911
10013
10115
10217
10310
10411
10519
10617
10715
10813
10911
11014
11113
11211
11317
11413
11511
11613
11712
11816
11911
12011
12116
12212
12313
12411
12513
12617
12711
12813
12914
13011
13113
13215
13317
13419
13511

[2,3,3,4,5,5,4,5,7,5,5,7,5,6,9,7,8,7,7,8,7,9,6,7,
 11,9,7,8,7,7,8,7,9,11,7,8,13,11,9,11,10,8,12,9,9,
 12,8,10,11,9,11,13,8,9,15,13,11,9,11,10,11,13,12,
 9,9,12,13,11,10,11,9,11,13,15,9,10,17,15,13,11,14,
 13,11,10,11,13,12,16,11,11,16,12,13,11,10,11,13,
 14,11,13,15,17,10,11,19,17,15,13,11,14,13,11,17,
 13,11,13,12,16,11,11,16,12,13,11,13,17,11,13,14,
 11,13,15,17,19,11]