Beatty Sequences Calculator
Free online beatty sequences calculator. Enter your values and get instant results with the formula, step-by-step working, a worked example and FAQs — everything runs locally in your browser on Calcton, no signup required.
中文版:贝蒂数列在线计算器
原理:Beatty 定理(1926):若 α、β 为正无理数且 1/α + 1/β = 1(即 β = α/(α−1)),则两个数列 ⌊nα⌋ 与 ⌊nβ⌋ 恰好无重叠、无遗漏地划分全体正整数——每个正整数在两列中出现且只出现一次。最著名的例子取 α = 黄金比 φ:φ² = φ + 1 使 β = φ²,于是 ⌊nφ⌋(下 Wythoff 数列)与 ⌊nφ²⌋(上 Wythoff 数列)分掉全体正整数,这正是 Wythoff 取子游戏的必胜策略基础。
步骤:输入 α 与项数 N,生成 A、B 两列的前 N 项;程序自动验证前 min(N,50) 项内两列并集无重叠覆盖 [1, ⌊Nα⌋]。
示例:α = φ = 1.618033988750 时 β = 2.618033988750,A 前 5 项 = 1, 3, 4, 6, 8,B 前 5 项 = 2, 5, 7, 10, 13,⌊10φ⌋ = 16;验证 1/φ + 1/φ² = 1.000000000000。取 α = √2 时 β = 3.414213562374(即 2 + √2)。
注意事项:α 必须是无理数且大于 1——整数 α 会使两列大量重叠;α 过于接近 1 时 β 巨大、验证区间内 B 项过少。浮点精度限制 N ≤ 500。
相关:黄金比 1.618033988750;β = 2.618033988750;⌊10φ⌋ = 16。
How to use the Beatty Sequences Calculator
- Fill in the inputs with your own numbers — every field shows what it expects.
- The result updates instantly as you type; no "Calculate" click needed.
- Read the result card for the main figure, the step-by-step formula, and practical notes.
Frequently asked questions
Is the Beatty Sequences Calculator free?
Yes — all math calculators on Calcton are free, with no sign-up required. Your inputs are processed in your browser and never sent to a server.
Is there a Chinese version of this tool?
Yes. Use the Chinese version link above — it is the same calculator with the interface in Simplified Chinese.
References
Formulas and benchmarks used by this calculator follow these published sources.
KevinContent LeadCalcton Editorial Team · Last updated 2026-10-01
Kevin maintains Calcton's formula verification and content: every calculator cites the standard it implements, worked examples are recomputed programmatically, and health benchmarks follow WHO and international guidelines.
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