There are several possible answers. One possibility is
t(n) = (-n3 + 9n2 - 14n + 12)/6
1246 km = 774.2 miles
0.0016
2423
0.1246
To guess a rule for a pattern, you need several numbers, not just one. Of course, you can invent any rule, for example, "all numbers in the sequence are equal to -4", or some more complicated rule.
The factors of 1246 are: 1, 2, 7, 14, 89, 178, 623, 1246.
The positive integer factors of 1246 are: 1, 2, 7, 14, 89, 178, 623, 1246
34.6111
1246 = 2 x 7 x 89
1246 km = 774.2 miles
1, 2, 7, 14, 89, 178, 623, 1246
explain how to find the rule in a numerical pattern
An exception does not obey a rule or pattern. Often, the only way to identify an exception is to know the rule or pattern that should be expected.
1246
Elbląg was created in 1246.
Temüge died in 1246.
1200