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A053063 as a simple table

na(n)
11
221
3213
44213
542135
6642135
76421357
886421357
9864213579
1010864213579
111086421357911
12121086421357911
1312108642135791113
141412108642135791113
15141210864213579111315
1616141210864213579111315
171614121086421357911131517
18181614121086421357911131517
1918161412108642135791113151719

[1,21,213,4213,42135,642135,6421357,86421357,
 864213579,10864213579,1086421357911,
 121086421357911,12108642135791113,
 1412108642135791113,141210864213579111315,
 16141210864213579111315,1614121086421357911131517,
 181614121086421357911131517,
 18161412108642135791113151719]