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Inverse of number triangle A128207.
1

%I #2 Mar 30 2012 18:59:20

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

%T 13,1,0,0,0,0,0,0,0,21,1,0,0,0,0,0,0,0,0,34,1,0,0,0,0,0,0,0,0,0,55,1

%N Inverse of number triangle A128207.

%C Row sums are A001611. Subdiagonal is A000045(n+1).

%e Triangle begins

%e 1,

%e 1, 1,

%e 0, 1, 1,

%e 0, 0, 2, 1,

%e 0, 0, 0, 3, 1,

%e 0, 0, 0, 0, 5, 1,

%e 0, 0, 0, 0, 0, 8, 1,

%e 0, 0, 0, 0, 0, 0, 13, 1,

%e 0, 0, 0, 0, 0, 0, 0, 21, 1,

%e 0, 0, 0, 0, 0, 0, 0, 0, 34, 1,

%e 0, 0, 0, 0, 0, 0, 0, 0, 0, 55, 1

%K nonn,tabl

%O 0,9

%A _Paul Barry_, Feb 19 2007