OFFSET
1,1
COMMENTS
All terms are divisible by 8.
LINKS
Robert Israel, Table of n, a(n) for n = 1..10000
EXAMPLE
a(3) = 96 is a term because 96 = 43 + 53 = 37 + 59 = 43*53 - 37*59 with 43, 53, 37 and 59 prime.
MAPLE
filter:= proc(n) local s, t;
for s in numtheory:-divisors(n/4) do
t:= n/(4*s);
if andmap(isprime, [2*s*t+s-t, 2*s*t-s+t, 2*s*t-s-t, 2*s*t+s+t]) then
return true
fi
od;
false
end proc:
select(filter, [seq(i, i=8..20000, 8)]);
CROSSREFS
KEYWORD
nonn
AUTHOR
J. M. Bergot and Robert Israel, Nov 17 2022
STATUS
approved