A385647 Decimal expansion of 1 - log(2)/2.

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

Offset: 0

Author

Paolo Xausa, Jul 06 2025

Keywords

• nonn
• cons
• easy

Comments

Probability that floor(x/y) is even for x, y chosen randomly in (0,1).

Examples

			0.65342640972002734529138393927091171596224993281987...
		

Links

• Paolo Xausa, Table of n, a(n) for n = 0..10000
• Morphocular, The answer involves Pi because why wouldn't it?, YouTube video, 2025 (see second half of video).

Crossrefs

Cf. A002162, A091651.

Essentially the same as A382854.

Programs

Magma

SetDefaultRealField(RealField(100)); [1 - Log(2)/2]; // Vincenzo Librandi, Jul 07 2025

Mathematica

First[RealDigits[1 - Log[2]/2, 10, 100]]

Formula

Equals 1 - A002162/2.