Formal target: Corpus.OEIS1223.conjecture
Any subsequence a(n ..
Exact formal statement
∀ (n m : Nat),
GE.ge.{0} n 3 →
Set.Infinite.{0}
(Set.ofPred.{0} fun k =>
Eq.{1} (Corpus.OEIS1223.gapSubsequence k (HAdd.hAdd.{0, 0, 0} m 1))
(Corpus.OEIS1223.gapSubsequence n (HAdd.hAdd.{0, 0, 0} m 1)))This target is a formal statement, not a proof of the problem.
Environment availability: available.