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A032834 as a simple table

na(n)
13
24
333
434
543
644
7333
8334
9343
10344
11433
12434
13443
14444
153333
163334
173343
183344
193433
203434
213443
223444
234333
244334
254343
264344
274433
284434
294443
304444
3133333
3233334
3333343
3433344
3533433
3633434
3733443
3833444
3934333
4034334

[3,4,33,34,43,44,333,334,343,344,433,434,443,444,
 3333,3334,3343,3344,3433,3434,3443,3444,4333,4334,
 4343,4344,4433,4434,4443,4444,33333,33334,33343,
 33344,33433,33434,33443,33444,34333,34334]