Recurrence 5 lookup certificate: A1 source bound

This is a checked coefficient-lookup shard for the fifth pseudo-division recurrence in the order-seven certificate.

theorem MazurTorsion.Kubert.OrderSevenBacktrackingCertificate.Internal.ResultantCertificate.recurrence5A1_coeff_high (n : ℕ) (h : 172 < n) : Polynomial.coeff remainder5Coefficient1 n = 0

theorem MazurTorsion.Kubert.OrderSevenBacktrackingCertificate.Internal.ResultantCertificate.recurrence5A1_natDegree_le : Polynomial.natDegree remainder5Coefficient1 ≤ 172