Journal of Integer Sequences, Vol. 29 (2026), Article 26.3.2

Further Extensions of Sury's Identity


Gregory Dresden
Washington & Lee University
Lexington, VA 24450
USA

Xiaoya Gao
Ürümqi Bayi High School
Ürümqi, Xinjiang
China

Abstract:

The equation commonly known as Sury's identity is a deceptively simple summation formula that connects the Lucas numbers, Fibonacci numbers, and powers of two. Many authors have given extensions and generalizations over the years; in this paper, we take a different approach that allows us to produce a good number of new summation formulas, all from elementary (but non-trivial) methods.


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(Concerned with sequences A000032 A000045 A000129 A001333 A006190 A015530.)


Received December 14 2025; revised version received May 9 2026. Published in Journal of Integer Sequences, May 15 2026.


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