proposition: Lemma stern_equation5 n: sub_seq (sternD 1 2 n) (stern11 n) = stern01 n.
proof: Proof. by rewrite -sub_sternD. Qed.
imports: mathcomp(ssreflect ssrfun ssrbool eqtype ssrnat) mathcomp(seq choice fintype order bigop ssralg) mathcomp(div ssrnum ssrint rat prime path binomial) mathcomp(tuple finset) gaia(fibm)