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

0,2

Links

Vincenzo Librandi, Table of n, a(n) for n = 0..100

Formula

a(n) = (n*(n+2)^n+1)/(n+1).

Mathematica

Table[(n (n + 2)^n + 1) / (n + 1), {n, 0, 20}] (* Vincenzo Librandi, Jun 21 2013 *)

Crossrefs

Cf. A083070, A083071.

Sequence in context: A363116 A099697 A346185 * A158837 A236962 A292916

Adjacent sequences: A083066 A083067 A083068 * A083070 A083071 A083072

Keyword

easy,nonn

Author

Paul Barry, Apr 21 2003

Status

approved