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 A081299 Diagonal of square array A081297. 6

%I

%S 1,3,13,181,1281,32551,314245,11638089,141943681,6914792611,

%T 101829922701,6152865979261,106138316846017,7657555132292703,

%U 151395000617362741,12699162274678909201,283052059672669084161

%N Diagonal of square array A081297.

%H Vincenzo Librandi, <a href="/A081299/b081299.txt">Table of n, a(n) for n = 0..200</a>

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

%t Table[((n + 1)^(n + 2) - (-n)^(n + 2)) / (2 n + 1), {n, 0, 20}] (* _Vincenzo Librandi_, Aug 08 2013 *)

%o (MAGMA) [((n+1)^(n+2)-(-n)^(n+2))/(2*n+1): n in [0..20]]; // _Vincenzo Librandi_, Aug 08 2013

%Y Cf. A081298, A081300, A081301, A081302.

%K easy,nonn

%O 0,2

%A _Paul Barry_, Mar 17 2003

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Last modified June 18 17:05 EDT 2019. Contains 324214 sequences. (Running on oeis4.)