|
%I #3 Mar 30 2012 18:59:07
%S 1,1,1,1,1,1,2,1,1,1,3,2,2,1,1,6,3,3,2,1,1,10,6,6,3,3,1,1,20,10,10,6,
%T 4,3,1,1,35,20,20,10,10,4,4,1,1,70,35,35,20,15,10,5,4,1,1,126,70,70,
%U 35,35,15,15,5,5,1,1,252,126,126,70,56,35,21,15,6,5,1,1,462,252,252,126,126
%N A number triangle with repeated columns of binomial coefficients.
%C Reversal of A096921. Row sums are A026010. Diagonal sums are 107250.
%F Number triangle T(n, k)=C(floor((2n-k-2)/2), floor((n-k)/2))
%e Triangle begins
%e 1;
%e 1,1;
%e 1,1,1;
%e 2,1,1,1;
%e 3,2,2,1,1;
%e 6,3,3,2,1,1;
%e 10,6,6,3,3,1,1;
%K easy,nonn,tabl
%O 0,7
%A _Paul Barry_, May 14 2005
|
