SequenceFold

SequenceFold[f,{x1,…,xn},{a1,a2,…}] gives the last element of SequenceFoldList[f,{x1,…,xn},{a1,a2,…}].

SequenceFold[f,{x1,…,xn},{a1,a2,…},k] applies f to k arguments at each step, with the first n coming from the xi or previous results, and the last k-n coming from the ai.

Please visit the official Wolfram Language Reference for more details and examples on core symbols.