A173171 - cp's OEIS frontend

A173171 a(n) = - sin^2((2n-1)arccos(sqrt n)) = sin^2((2n-1)arcsin(sqrt n)) - 1.

n	a(n)
0	-1
1	0
2	49
3	23762
4	25421763
5	48225038404
6	142786923879605
7	608447515452613206
8	3527836867501829594887
9	26710782540478226038759688
10	255922222218837615280903143609
11	3026917140685147530327256796600410

[-1, 0, 49, 23762, 25421763, 48225038404, 142786923879605, 608447515452613206, 3527836867501829594887, 26710782540478226038759688, 255922222218837615280903143609, 3026917140685147530327256796600410]

cp's OEIS Frontend

A173171 a(n) = - sin^2((2n-1)arccos(sqrt n)) = sin^2((2n-1)arcsin(sqrt n)) - 1.

Table of values

List of values

cp's OEIS Frontend

A173171 a(n) = - sin^2((2n-1)*arccos(sqrt n)) = sin^2((2n-1)*arcsin(sqrt n)) - 1.

Table of values

List of values

A173171 a(n) = - sin^2((2n-1)arccos(sqrt n)) = sin^2((2n-1)arcsin(sqrt n)) - 1.