OFFSET
1,1
COMMENTS
a(n) == 0 (mod 8).
If a*b = k*a(n) + 1 then b - a == 0 (mod 8), 1 < a < b < a(n), 1 <= k < a(n).
gcd(k, a*b) = 1.
EXAMPLE
CROSSREFS
KEYWORD
nonn
AUTHOR
Torlach Rush, Mar 13 2020
STATUS
approved