OFFSET
0,5
COMMENTS
Riordan array (1, x/sqrt(1-4x)). Inverse of Riordan array (1, x*exp(arcsinh(-2x)).
T is the convolution triangle of the shifted central binomial coefficients binomial(2*(n-1), n-1). - Peter Luschny, Oct 19 2022
FORMULA
EXAMPLE
Triangle begins:
1;
0, 1;
0, 2, 1;
0, 6, 4, 1;
0, 20, 16, 6, 1;
0, 70, 64, 30, 8, 1;
0, 252, 256, 140, 48, 10, 1;
MAPLE
# Uses function PMatrix from A357368.
PMatrix(10, n -> binomial(2*(n-1), n-1)); # Peter Luschny, Oct 19 2022
CROSSREFS
KEYWORD
AUTHOR
Philippe Deléham, Feb 01 2012
STATUS
approved