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A131541 as a simple table

na(n)
00
115
227
324
4181
5317
62309
7972
825264
9131979
10279275
11279269
121727605
136030752
148760853
1577235364

[0,15,27,24,181,317,2309,972,25264,131979,279275,
 279269,1727605,6030752,8760853,77235364]