[math-fun] A309151

https://oeis.org/A309151 EA: "As this sequence needs a lot of backtracking, we don't guarantee the accuracy of the last 79 integers of the 1079-term b-file." This (and the fact that Neil approved it) surprises me since the OEIS style sheet suggests that (for sequences with conjectured terms) "we give the known terms (up to the first gap) in a b-file, and all the terms - with gaps, question marks, or ranges for the uncertain terms - in an a-file".