OFFSET
0,3
LINKS
Shi-Mei Ma, Qi Fang, Toufik Mansour, and Yeong-Nan Yeh, Alternating Eulerian polynomials and left peak polynomials, arXiv:2104.09374 [math.CO], 2021.
EXAMPLE
Triangle begins:
1;
1;
3, 1;
11, 5;
57, 38, 5;
361, 302, 61;
...
MATHEMATICA
xi[0][_] = 1;
xi[n_][x_] := xi[n, x] = (2n - 1 + (n-1) x) xi[n-1][x] - (1 + x)(4 + 2x)* xi[n-1]'[x];
Table[CoefficientList[xi[n][x], x], {n, 0, 10}] // Flatten (* Jean-François Alcover, Apr 21 2021 *)
CROSSREFS
KEYWORD
nonn,tabf
AUTHOR
N. J. A. Sloane, Apr 21 2021
EXTENSIONS
More terms from Jean-François Alcover, Apr 21 2021
STATUS
approved