A269418 - cp's OEIS frontend

A269418 a(n) is numerator of y(n), where y(n+1) = (25n^2-1)/48 y(n) + (1/2)Sum_{k=1..n}y(k)y(n+1-k), with y(0) = -1.

n	a(n)
0	-1
1	1
2	49
3	1225
4	4412401
5	73560025
6	245229441961
7	7759635184525
8	2163099334469560445
9	243352176577765537625
10	126154825844683612669806743
11	307996788703417873806157775
12	3816216508144039222348410175181221
13	4472139245793702477426700875742975

[-1, 1, 49, 1225, 4412401, 73560025, 245229441961, 7759635184525, 2163099334469560445, 243352176577765537625, 126154825844683612669806743, 307996788703417873806157775, 3816216508144039222348410175181221, 4472139245793702477426700875742975]

cp's OEIS Frontend

A269418 a(n) is numerator of y(n), where y(n+1) = (25n^2-1)/48 y(n) + (1/2)Sum_{k=1..n}y(k)y(n+1-k), with y(0) = -1.

Table of values

List of values

cp's OEIS Frontend

A269418 a(n) is numerator of y(n), where y(n+1) = (25*n^2-1)/48 * y(n) + (1/2)*Sum_{k=1..n}y(k)*y(n+1-k), with y(0) = -1.

Table of values

List of values

A269418 a(n) is numerator of y(n), where y(n+1) = (25n^2-1)/48 y(n) + (1/2)Sum_{k=1..n}y(k)y(n+1-k), with y(0) = -1.