010203040506

010203040506 is a string composed of six two-digit blocks: 01, 02, 03, 04, 05, and 06. When interpreted as such, it represents a zero-padded sequence of consecutive integers from 1 to 6. The notation is not a formal mathematical object in itself, but a compact way to encode a simple pattern in text or data.

In computing and data formatting, zero-padding is common to ensure uniform width for numeric fields. The sequence 010203040506 can serve as an example in tutorials to demonstrate string concatenation, numeric formatting, or sorting of fixed-width tokens.

Mathematically, the underlying values are the integers 1 through 6. The leading zeros do not change their value; they only affect textual representation. Therefore, the sequence is often used to illustrate the difference between numerical value and textual formatting in algorithm design.

Common uses include test data, pattern examples in programming lessons, or as a mnemonic in puzzle clues. It may appear in product identifiers, file names, or datasets where consistent two-digit formatting helps with alignment or parsing.

See also zero padding, fixed-width formatting, two-digit numbers, and arithmetic progression.