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A108036 Triangle read by rows: the triangle in A108035 surrounded by a border of 0's. 2

%I #3 Mar 30 2012 16:50:16

%S 0,0,0,0,1,0,0,2,2,0,0,3,3,3,0,0,5,5,5,5,0,0,8,8,8,8,8,0,0,13,13,13,

%T 13,13,13,0,0,21,21,21,21,21,21,21,0,0,34,34,34,34,34,34,34,34,0,0,55,

%U 55,55,55,55,55,55,55,55,0,0,89,89,89,89,89,89,89,89,89,89,0,0,144,144,144,144

%N Triangle read by rows: the triangle in A108035 surrounded by a border of 0's.

%F G.f.: x*y*(1+x+y)/((1-x-x^2)*(1-y-y^2)). [U coordinates]

%e 0; 0,0; 0,1,0; 0,2,2,0; 0,3,3,3,0; 0,5,5,5,5,0; ...

%Y Cf. A039913, A108035.

%K nonn,tabl

%O 0,8

%A _N. J. A. Sloane_, Jun 01 2005

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Last modified March 19 02:58 EDT 2024. Contains 370952 sequences. (Running on oeis4.)