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A020456 as a simple table

na(n)
111
2181
3811
4881
51181
61811
78111
818181
981181
1088811
111111181
121181881
131881181
141881811
151881881
168118181
178181881
188188111
198188181
208818811
218881111
228881811
2311818181
2411881811
2511888111
2618111881
2718118811
2818181181
2918811181
3018888811

[11,181,811,881,1181,1811,8111,18181,81181,88811,
 1111181,1181881,1881181,1881811,1881881,8118181,
 8181881,8188111,8188181,8818811,8881111,8881811,
 11818181,11881811,11888111,18111881,18118811,
 18181181,18811181,18888811]