The Chvátal–Sankoff constant for binary strings

Pin down the constant γ in the expected longest common subsequence γn of two random binary strings, rigorously between 0.79266 and 0.82628.

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	2	+ "domain": "mathematics",
	3	+ "topics": [
	4	+ "probability",
	5	+ "combinatorics"
	6	+ ],
	7	+ "type": "proof",
	8	+ "source": {
	9	+ "key": "optimization-constants",
	10	+ "name": "Optimization Constants in Mathematics",
	11	+ "url": "https://teorth.github.io/optimizationproblems/constants/31a.html",
	12	+ "id": "31",
	13	+ "curator": "Terence Tao and contributors",
	14	+ "status": "open",
	15	+ "as_of": "2026-10-20",
	16	+ "catalog": "0521c19bbd38"
	17	+ }
	18	+}