%I A081299
%S A081299 1,3,13,181,1281,32551,314245,11638089,141943681,6914792611,
%T A081299 101829922701,6152865979261,106138316846017,7657555132292703,
%U A081299 151395000617362741,12699162274678909201,283052059672669084161
%N A081299 Diagonal of square array A081297.
%F A081299 a(n)=((n+1)^(n+2)-(-n)^(n+2))/(2n+1).
%Y A081299 Cf. A081298, A081300, A081301, A081302.
%Y A081299 Sequence in context: A065622 A140421 A114317 this_sequence A117808 A002065 
               A087601
%Y A081299 Adjacent sequences: A081296 A081297 A081298 this_sequence A081300 A081301 
               A081302
%K A081299 easy,nonn
%O A081299 0,2
%A A081299 Paul Barry (pbarry(AT)wit.ie), Mar 17 2003