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A297351 as a simple table

na(n)
11
22
33
44
56
66
77
88
99
1010
1110
1211
1312
1412
1513
1614
1715
1815
1916
2016
2116
2217

[1,2,3,4,6,6,7,8,9,10,10,11,12,12,13,14,15,15,16,
 16,16,17]