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A181073 as a simple table

na(n)
11
21243
31423
42143
52341
62413
72431
83241
93421
104123
114213
124231
134321
141234567
151234657
161235467
171235647
181236457
191236547
201243567
211243657
221245367
231245637
241245673
251245763
261246357
271246537
281246573
291246753

[1,1243,1423,2143,2341,2413,2431,3241,3421,4123,
 4213,4231,4321,1234567,1234657,1235467,1235647,
 1236457,1236547,1243567,1243657,1245367,1245637,
 1245673,1245763,1246357,1246537,1246573,1246753]