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A044757 as a simple table

na(n)
144
2144
3244
4344
5449
6544
7644
8744
9844
10944
111044
121144
131244
141344
151449
161544
171644
181744
191844
201944
212044
222144
232244
242344
252449
262544
272644
282744
292844
302944
313044
323144
333244
343344
353449
363544
373644
383744
393844

[44,144,244,344,449,544,644,744,844,944,1044,1144,
 1244,1344,1449,1544,1644,1744,1844,1944,2044,2144,
 2244,2344,2449,2544,2644,2744,2844,2944,3044,3144,
 3244,3344,3449,3544,3644,3744,3844]