

A108036


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


2



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, 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, 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
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OFFSET

0,8


LINKS

Table of n, a(n) for n=0..82.


FORMULA

G.f.: x*y*(1+x+y)/((1xx^2)*(1yy^2)). [U coordinates]


EXAMPLE

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


CROSSREFS

Cf. A039913, A108035.
Sequence in context: A128540 A160692 A051775 * A190174 A263139 A063711
Adjacent sequences: A108033 A108034 A108035 * A108037 A108038 A108039


KEYWORD

nonn,tabl


AUTHOR

N. J. A. Sloane, Jun 01 2005


STATUS

approved



