OFFSET
1,2
LINKS
Nicolay Avilov, Illustration for terms a(1)-a(6)
EXAMPLE
For n=1, one point (0,0) lies between the parabolas y = 1 - x^2 and y = x^2 - 1, so that a(1) = 1.
CROSSREFS
KEYWORD
nonn
AUTHOR
Nicolay Avilov, Jan 08 2024
STATUS
approved