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A185080 as a simple table

na(n)
17
227
3100
4371
51386
65214
719734
875075
9286858
101100138
114232592
1216328942
1363146500
14244711260
15950094810
163694876515
1714390571690
1856122547250
19219140635560
20856617714810
213351878581740
2213127747882340
2351458942047500
24201869999056206
25792497263436676

[7,27,100,371,1386,5214,19734,75075,286858,
 1100138,4232592,16328942,63146500,244711260,
 950094810,3694876515,14390571690,56122547250,
 219140635560,856617714810,3351878581740,
 13127747882340,51458942047500,201869999056206,
 792497263436676]