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A215945 as a simple table

na(n)
0-3
1-105
2-3387
3-108945
4-3504051
5-112702329
6-3624894315
7-116589061665
8-3749904995427
9-120609834867081
10-3879226882922139
11-124769271310005681
12-4013008656895890963
13-129072153032843014809
14-4151404124161560449739

[-3,-105,-3387,-108945,-3504051,-112702329,
 -3624894315,-116589061665,-3749904995427,
 -120609834867081,-3879226882922139,
 -124769271310005681,-4013008656895890963,
 -129072153032843014809,-4151404124161560449739]