OFFSET
1,3
COMMENTS
This is a variation of A286091 where the y-intercepts of all lines are also distinct.
LINKS
Scott R. Shannon, Table of n, a(n) for n = 1..600
EXAMPLE
a(12) = 66. A value of 15, with coordinate (12,15), for this term would create a point for which all line gradients are distinct, see A286091, but it creates a line that passes through the origin with a(4), a point with coordinate (4,5). However the terms a(3), at coordinate (3,2) and a(6), at coordinate (6,4), have already created a line that passes through the origin, thus a(12) cannot be 15. The coordinate (12,66) is the first point the leads to all lines and y-intercepts being distinct.
CROSSREFS
KEYWORD
nonn
AUTHOR
Scott R. Shannon, Jun 10 2023
STATUS
approved