1,1

all odd non square number nor odd square number-1 may be writed as n*(n+1)-k or n*(n+1)+k with k odd < n and n>1

for l=1 to n for c=l to n T(l, c)=(l+c)*(l+c+1)-2*l+1 next c next l for c=1 to n for l=c+1 to n T(l, c)=(l+c-1)*(l+c)+2*c-1 next l next c

Sequence in context: A113837 A079498 A035035 this_sequence A111906 A101550 A136801

Adjacent sequences: A113906 A113907 A113908 this_sequence A113910 A113911 A113912

nonn,tabl

Pierre CAMI (pierrecami(AT)tele2.fr), Jan 29 2006