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A219689 as a simple table

na(n)
115
235
3269
41688
58964
644736
7219216
81062133
95046678
1023361295
11105246826
12462379361
131984693730
148329188237
1534174571720
16137072090506
17537533392034
182061741321158
197738348853856
2028437341923159
21102381325106959

[15,35,269,1688,8964,44736,219216,1062133,5046678,
 23361295,105246826,462379361,1984693730,
 8329188237,34174571720,137072090506,537533392034,
 2061741321158,7738348853856,28437341923159,
 102381325106959]