Using the shortsums-chart one has one of the most powerfull filterpatterns at his fingertips.

The tool can be used on its own, where you type (or paste) the numbers to filter out of the chart, yourself,
or select a state and daterange and have the fallen numbers filtered out.

Pretty easy to view what numbers have not fallen within a certain daterange of a state.

The tool also offers several other filtering options, such as Sumdigits, HighLow, InOut, OddEven, Consecutives, KeyDigits, Exclude Digits.

The result (left over numbers) will be outputted into the textbox on the right.

What is a "Shortsum"?

A shortsum, also known as the Last Significant Digit, is the last digit of a sum of the digits of a number.

Example:
519 : 5 + 1 + 9 = 15 --> Last digit = 5, so this number belongs to shortsum 6
405 : 4 + 0 + 5 = 9 --> Last digit = 9, so this number belongs to shortsum 9

Straight shortsums
From Version 3.5.0 there is also the Straight Shortsums Chart available.