Pola barisan bilangan darini 1 ,5 , -1 ,3 ,7 ,1 , 5 ,9 ,3 , 7 , 11 , 5

1, 5, -1, 3, 7, 1, 5, 9, 3, 7, 11, 5

»Larik 1
1, 3, 5, 7, x
x = 7 + 2 = 9

»Larik 2
5, 7, 9, 11, x
x = 11 + 2 = 13

»Larik 3
-1, 1, 3, 5, x
x = 5 + 2 = 7

3 Bilangan selanjutnya = 9, 13, dan 7