A108063 - OEIS

%I #2 Mar 30 2012 17:28:32

%S 0,0,0,1,0,1,1,0,0,1,1,-1,0,-1,1,2,-1,0,0,-1,2,4,-1,1,0,1,-1,4,6,-2,1,

%T 0,0,1,-2,6,9,-4,1,-1,0,-1,1,-4,9,15,-6,2,-1,0,0,-1,2,-6,15,25,-9,4,

%U -1,1,0,1,-1,4,-9,25,40,-15,6,-2,1,0,0,1,-2,6,-15,40,64,-25,9,-4,1,-1,0,-1,1,-4,9,-25,64,104,-40,15,-6,2,-1,0,0,-1,2,-6

%N Triangle, read by rows, where T(n,k) = A006498(n+1) - A106408(n,k). A006498 are the central numbers of A106408.

%C Each entry is +- an entry in A006498. Each column and each diagonal contains either A006498 or -A006498. For n>2, each row contains an alternating-signed version of a subsequence of A006498, both in forward and reverse order. For n>2 each column contains an alternating-signed version of a contiguous subsequence of A006498 in reverse order.

%Y Cf. A006498, A106408.

%K sign,tabl

%O 1,16

%A _Gerald McGarvey_, Jun 02 2005