No, I didn't need to use a button to see that. I wonder if different servers are delivering different results (or maybe my input got further in the allotted time).
You mean the (i) button?
When I enter exactly that input into W|A I see, under the "More digits" button on the right, the remark "C is Catalan's constant". Do you get a different result?
It does, the C stands for Catalan's constant, see here.
