OFFSET
0,8
EXAMPLE
Triangle begins
1,
0, 1,
-1, 0, 1,
0, -3, 0, 1,
0, 0, -6, 0, 1,
0, 0, 0, -10, 0, 1,
0, 0, 0, 0, -15, 0, 1,
0, 0, 0, 0, 0, -21, 0, 1,
0, 0, 0, 0, 0, 0, -28, 0, 1,
0, 0, 0, 0, 0, 0, 0, -36, 0, 1,
0, 0, 0, 0, 0, 0, 0, 0, -45, 0, 1
MATHEMATICA
(* The function RiordanArray is defined in A256893. *)
RiordanArray[1 - #^2/2&, #&, 11, True] // Flatten (* Jean-François Alcover, Jul 19 2019 *)
CROSSREFS
KEYWORD
AUTHOR
Paul Barry, Apr 28 2007
STATUS
approved