OFFSET
0,2
COMMENTS
This strictly increasing sequence proves (yet again) the infinitude of primes.
REFERENCES
Arthur Engel, Problem-Solving Strategies, Springer, 1998, pages 121-122 (E3, said to be a "recent competition problem from the former USSR").
LINKS
Alexander Bogomolny, Infinitude of Primes via Powers of 2
factordb, First 20 factorizations of A220161
EXAMPLE
CROSSREFS
KEYWORD
nonn,hard,more
AUTHOR
Hans Havermann, Mar 06 2015
EXTENSIONS
Offset changed by Arkadiusz Wesolowski, Aug 01 2016
STATUS
approved