OFFSET
0,5
EXAMPLE
Table starts:
[n] [k=0,1,2,...] row sum
[0], [1], 1
[1], [0, 1], 1
[2], [0, 2, 1], 3
[3], [0, 6, 4, 1], 11
[4], [0, 6, 16, 6, 1], 29
[5], [0, 30, 36, 30, 8, 1], 105
[6], [0, 20, 120, 98, 48, 10, 1], 297
[7], [0, 140, 232, 342, 200, 70, 12, 1], 997
[8], [0, 70, 756, 924, 784, 350, 96, 14, 1], 2995
[9], [0, 630, 1300, 2856, 2576, 1550, 556, 126, 16, 1], 9611
MAPLE
MATHEMATICA
(* The function RiordanArray is defined in A256893. *)
RiordanArray[1&, (1+#/(1-4#^2))/Sqrt[1-4#^2]&, 10] // Flatten (* Jean-François Alcover, Jul 16 2019 *)
PROG
(SageMath) # uses[riordan_array from A256893]
riordan_array(1, (1+x/(1-4*x^2))/sqrt(1-4*x^2), 10)
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Peter Luschny, Aug 19 2016
STATUS
approved