A298752 Decimal expansion of (1/2)(1 + sqrt(-7 + 4*sqrt(5))).

1, 1, 9, 7, 1, 8, 5, 7, 5, 5, 3, 7, 6, 4, 2, 0, 2, 4, 9, 1, 9, 7, 0, 6, 0, 4, 4, 8, 2, 0, 5, 5, 8, 5, 5, 7, 4, 8, 5, 0, 5, 5, 7, 0, 7, 1, 9, 9, 0, 3, 9, 7, 8, 7, 2, 9, 5, 2, 2, 2, 5, 0, 5, 7, 7, 3, 9, 7, 4, 1, 8, 0, 3, 4, 0, 4, 5, 0, 0, 1, 0, 3, 1, 9, 4, 5

Offset: 1

Author

Clark Kimberling, Feb 13 2018

Keywords

• nonn
• easy
• cons

Examples

			constant = 1.1971857553764202492... = positive zero of x^2 - x + 2- sqrt(5).
		

Links

• Clark Kimberling, Table of n, a(n) for n = 1..10000

Crossrefs

Cf. A298749, A298750, A298751.

Programs

Mathematica

r = (1/2)*(1 + Sqrt[-7 + 4 Sqrt[5]])
RealDigits[N[r, 100], 10][[1]];  (* A298752 *)