program CalculateZ;
varn, i: integer;z: integer;
beginwrite′Enteranaturalnumbern:′'Enter a natural number n: '′Enteranaturalnumbern:′;readlnnnn;
z := 1;
for i := 1 to n dobeginz := z 3</em>i−13 </em> i - 13</em>i−1;end;
writeln′Theresultis:′,z'The result is: ', z′Theresultis:′,z;end.
program CalculateZ;
var
n, i: integer;
z: integer;
begin
write′Enteranaturalnumbern:′'Enter a natural number n: '′Enteranaturalnumbern:′;
readlnnnn;
z := 1;
for i := 1 to n do
begin
z := z 3</em>i−13 </em> i - 13</em>i−1;
end;
writeln′Theresultis:′,z'The result is: ', z′Theresultis:′,z;
end.