My simple workaround (up until now when I found this thread) was to go to my spreadsheet editor generate the sequence there, copy, back to subl, expand the cursor over however many lines and paste.
This approach can be applied in any text editor that allows you to expand (clone) the cursor.
For this particular case you can use Increment Selection package. Just press Ctrl+Alt+I (Command+Control+I) while having multiple cursors at the beginning of each line.
In addition to melinath answer, here's an example of how to do it:
You will need Package Control first. It shouldn't take more than 30 seconds to install both things.
Steps:
Install Package Control.
Open Command Palette: Ctrl+Shift+P (Mac: Command+Shift+P).
Type Install Package Control and click to install.
Install Increment Selection package.
Open Command Palette again.
Type Package Control: Install Package, click on it and wait a short period.
Type Increment Selection and click on it to install.
Add line numbers to the beginning of each line.
Select all lines with Ctrl+A (Mac: Command+A)
Change selection to multiple lines with Ctrl+Shift+L (Mac: Command+Shift+L)
Go to the start of each line by pressing Home (Mac: Command+←)
Use Increment Selection with Ctrl+Alt+I (Mac: Command+Control+I)
Result:
Other examples for Increment Selection
Increment Selection can also replace numbers, prefix numbers with leading zeroes, increment letters, increment by a step and more.
[1] text [1] text [1] -> 1| text 2| text 3|
[a] text [a] text [a] -> a| text b| text c|
[01] text [01] text [01] -> 01| text 02| text 03|
[05,3] text [05,3] text [05,3] -> 05| text 08| text 11|
[5,-1] text [5,-1] text [5,-1] -> 5| text 4| text 3|
Hint: [] stands for a selection, | stands for a caret.
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