OFFSET
1,1
COMMENTS
All terms end in 9 (or 1, if there are any with A335592(k) < 0).
LINKS
Robert Israel, Table of n, a(n) for n = 1..10000
MAPLE
count:= 0: R:= NULL:
L:= [-9, -7, -3, -1]:
for k from 1 while count < 100 do
for i from 1 to 4 do
for x from L[i]+10 by 10 do until isprime(x);
L[i]:= x;
od;
v:= L[1]*L[4]-L[2]*L[3];
if isprime(abs(v)/2) then count:= count+1; R:= R, abs(v)/2; fi
od:
R;
CROSSREFS
KEYWORD
AUTHOR
J. M. Bergot and Robert Israel, Jan 27 2021
STATUS
approved