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A131537 as a simple table

na(n)
00
15
225
383
4219
5221
62270
711020
818843
9192915
10271978
11743748
121039315
1313873203
1414060685

[0,5,25,83,219,221,2270,11020,18843,192915,271978,
 743748,1039315,13873203,14060685]