Edit: answered in comment from Dan - anticipated is what I was after.
Reading a recent paper in the mathematics field, the result seemed familiar, and indeed, I found in a paper I had from 25 years prior with pretty much the same result.
I thought "this presaged / predated / foreshadowed ... that.", but I'm sure there's a much more precise word for the context that eludes me (as in, I'm sure I've seen the desired word in that context used before).
I've been scouring thesauri with no joy, any ideas?