Большое начинается с малого
0, 1, 1, 2, 3, 5, 8, 13, 21...
2, 3, 5, 13, ?
2, 3, 5, 7, 11, 13, 17, 19...
2, 3, 5, 13, ?
2, 3, 5, 7, 11, 13, 17, 19...