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A072956 as a simple table

na(n)
11
25
36
47
59
611
71000000
81000001
91000005
101000006
111000007
121000009
131000011
145000000
155000001
165000005
175000006
185000007
195000009
205000011
216000000
226000001
236000005
246000006
256000007
266000009
276000011
287000000
297000001
307000005
317000006
327000007
337000009

[1,5,6,7,9,11,1000000,1000001,1000005,1000006,
 1000007,1000009,1000011,5000000,5000001,5000005,
 5000006,5000007,5000009,5000011,6000000,6000001,
 6000005,6000006,6000007,6000009,6000011,7000000,
 7000001,7000005,7000006,7000007,7000009]