login
A159756
Triangle A159755 reversed .
0
0, 1, -1, 4, -1, -2, 12, 0, -3, -3, 32, 4, -4, -5, -4, 80, 16, -4, -8, -7, -5, 192, 48, 0, -12, -12, -9, -6, 448, 128, 16, -16, -20, -16, -11, -7, 1024, 320, 64, -16, -32, -28, -20, -13, -8, 2304, 768, 192, 0, -48, -48, -36, -24, -15, -9
OFFSET
0,4
FORMULA
Sum_{k=0..n} T(n,k) = A045618(n-2) for n>=2 . T(2n,n)=-A001787(n).
EXAMPLE
Triangle begins : 0 ; 1,-1 ; 4,-1,-2 ; 12,0,-3,-3 ; 32,4,-4,-5,-4 ; ...
CROSSREFS
KEYWORD
sign,tabl
AUTHOR
Philippe Deléham, Apr 21 2009
STATUS
approved