The phrase "interesting calculation" is correct and usable in written English.
You can use this phrase whenever you are describing a calculation that you find interesting or relevant. For example, "The researcher made an interesting calculation to determine the frequency of the data samples."
Adams did some interesting calculations but not much more.
To me, making a bloodline plea is a little like saying to your intended, "You'll be an excellent egg (or sperm) donor -- and, believe me, I'll pay you for it -- but don't expect to be treated like family!" You have to make some interesting calculations when designing a prenuptial agreement.
Q&A site Quora is officially reticent about sharing usage metrics which leads Quora fans to make some interesting calculations and guestimations.
In "The News Landscape in 2014: Transformed or Diminished," Abernathy and Foster present old media's path to survival more coherently than anyone before them and they throw in some interesting calculations on the stock performance of big media versus the S&P 500.
These are very interesting calculations possibly worth further fleshing out.
What's more, the decision not to send a staff reporter to the hearing for so long also contained an interesting pre-calculation: that the early coverage would not be considered as front-page news.
Especially interesting is the calculation of when Wi-Fi is "worth it"—ie, when there's enough room to open your laptop and enough time to use it.
For validation purposes, it would be interesting to compare calculations of the ionospheric scale/transition heights from TSM with corresponding calculations from two other well-known models – the NeQuick Model (NeQ) and the Parameterized Ionospheric Model (PIM).
This forms an interesting comparison with calculations that The New York Sun made in 1913.
