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A017988 as a simple table

na(n)
01
11
22
35
48
514
625
742
873
9125
10213
11365
12625
131068
141827
153125
165343
179137
1815625
1926718
2045687
2178125
22133591
23228438
24390625
25667959
261142194
271953125
283339796
295710972
309765625
3116698983
3228554860
3348828125
3483494919
35142774303
36244140625

[1,1,2,5,8,14,25,42,73,125,213,365,625,1068,1827,
 3125,5343,9137,15625,26718,45687,78125,133591,
 228438,390625,667959,1142194,1953125,3339796,
 5710972,9765625,16698983,28554860,48828125,
 83494919,142774303,244140625]