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A281254 as a simple table

na(n)
11
221
3312
44213
553124
6642135
77531246
886421357
9975312468
1010864213579
111197531246810
12121086421357911
1313119753124681012
141412108642135791113
15151311975312468101214
1616141210864213579111315
171715131197531246810121416

[1,21,312,4213,53124,642135,7531246,86421357,
 975312468,10864213579,1197531246810,
 121086421357911,13119753124681012,
 1412108642135791113,151311975312468101214,
 16141210864213579111315,1715131197531246810121416]