A083069 Main diagonal of number array A083064.
1, 2, 11, 94, 1037, 14006, 224695, 4185098, 88888889, 2122152922, 56288512931, 1642813694534, 52332842192581, 1807181134905134, 67253754435399407, 2683521610790452306, 114296029267382825201, 5175920921241202064498
Offset: 0
Links
- Vincenzo Librandi, Table of n, a(n) for n = 0..100
Programs
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Mathematica
Table[(n (n + 2)^n + 1) / (n + 1), {n, 0, 20}] (* Vincenzo Librandi, Jun 21 2013 *)
Formula
a(n) = (n*(n+2)^n+1)/(n+1).