Preliminary Sequestrable Exempt Classification by OMB Account and Type of Budgetary Resource
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Via Patrick Durusau at Another Word for it:
The OMB (“o” stands for opaque) report: OMB Report Pursuant to the Sequestration Transparency Act of 2012 (P. L. 112–155), Appendix B. Preliminary Sequestrable / Exempt Classification, classifies accounts as sequestrable, exempt, etc.
One reason to be “exempt” is funds were already sequestered elsewhere in the budget. Makes sense on the face of it.
But for 487 entries out of 2126 in Appendix B, or 22.9%, are being sequestered from some unstated part of the government.
Totally opaque.
Patrick makes his analysis of Appendix B available for download as a CVS file. I took it and turned it into this handy online spreadsheet.

This work is licensed under a Creative Commons Attribution 3.0 Unported License.
UPDATE Adding, I haven't tried the exports yet. I'd love it if somebody would!
Comments
Export to XLS worked fine (one quirk though)
If you stay on the download page it will prompt you to download it again every minute or so. So navigate away when the download completes successfully!
Is this a Drupal plugin, Google Doc, what?
Re: Preliminary Sequestrable Exempt Classification by OMB...
csv, xlsx both work fine.
[sorta] like dan i got a repeating prompt when i downloaded the xlsx file, but not when i downloaded the csv file.
an aside, totally ot, you're fampus! http://vagabondscholar.blogspot.com/2012/12/jon-swift-memorial-roundup-2...
[also, you're famous...]