In the Sequence interface of Worked Example 9.2, add static methods that yield Sequence instances:

static Sequence multiplesOf(int n)
static Sequence powersOf(int n)

For example, Sequence.powersOf(2) should return the same sequence as the SquareSequence class in the worked example.

Data from Example 9.2,

n this Worked Example, we investigate properties of number sequences. A number sequence can be a sequence of measurements, prices, random values, or mathematical values (such as the sequence of prime numbers). There are many interesting properties that can be investigated. For example, you can look for hidden patterns or test whether a sequence is truly random. Problem Statement Investigate how the last digit of each value is distributed. For a given sequence of values, produce a chart such as

0: 105
1: 94
2: 81
3: 112
4: 89
5: 103
6: 103
7: 100
8: 108
9: 105

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