Yellowstone sequence: Difference between revisions

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;Example:
;Example:
a(n) is 4 because 4 is the smallest number following 1, 2, 3 in the sequence that is relatively prime to the entry before it (3),
a(4) is 4 because 4 is the smallest number following 1, 2, 3 in the sequence that is relatively prime to the entry before it (3),
and is not relatively prime to the number two entries before it (2).
and is not relatively prime to the number two entries before it (2).