A174014 - OEIS

%I #5 Mar 30 2012 18:59:26

%S 1,1,1,2,3,1,3,7,5,1,4,13,15,7,1,4,19,33,26,9,1,2,19,53,66,40,11,1,-3,

%T 3,51,115,115,57,13,1,-10,-37,-19,103,215,183,77,15,1,-14,-89,-193,

%U -120,173,364,273,100,17,1,-4,-91,-387,-664,-406,252,574,388,126,19,1

%N Deleham triangle [1,1,-1,1,1,-1,1,...] DELTA [1,0,0,1,0,0,1,0,...], DELTA defined in A084938.

%C First column is A174015. Row sums are A174016. Diagonal sums are A174013.

%e Triangle begins

%e 1,

%e 1, 1,

%e 2, 3, 1,

%e 3, 7, 5, 1,

%e 4, 13, 15, 7, 1,

%e 4, 19, 33, 26, 9, 1,

%e 2, 19, 53, 66, 40, 11, 1,

%e -3, 3, 51, 115, 115, 57, 13, 1,

%e -10, -37, -19, 103, 215, 183, 77, 15, 1,

%e -14, -89, -193, -120, 173, 364, 273, 100, 17, 1

%K easy,sign,tabl

%O 0,4

%A _Paul Barry_, Mar 05 2010