A059484 Triangle T(n,k) = coefficient of x^n*y^k in 1/(1-x*y-x*y^2-x^2*y^3), read by rows in order 00, 10, 01, 20, 11, 02, ...

1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 3, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 5, 0, 0, 0, 0, 0, 0, 0, 1, 5, 0, 0, 0, 0, 0, 0, 0, 0, 7, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 13, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 9, 7, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 25, 1, 0, 0, 0, 0, 0, 0

Offset: 0

Author

N. J. A. Sloane, Feb 04 2001

Keywords

• nonn
• tabl
• easy

Links

• R. C. Read, Contributions to the cell growth problem, Canad. J. Math., 14 (1962), 1-20.

Crossrefs

Row sums: A079973.

Programs

Maple

read transforms; 1/(1-x*y-x*y^2-x^2*y^3); SERIES2(%,x,y,12): SERIES2TOLIST(%,x,y,12);