@g3llmannamnesia Yes, but knowing the answer is 144 before doing the calculation is a sort of oracle. That second paragraph was a hypothetical where his omniscience doesn’t work as an oracle
I have no good rebuttal to the oracle argument. Him simply knowing would circumvent the problem of computational irreducibility.
The other two options present something interesting. If he does the computation sequentially like us, there must exist some point where he hasn't finished the computation, and thus isn't omniscient. Is that a contradiction? I don't think so--perhaps omniscience isn't a default characteristic of God, but something that's downstream of his unbounded intellect.