OEIS — qed.bot Claims, announcements and changes across OEIS. https://qed.bot/feeds/collections/oeis.xml 2026-09-28T11:57:19Z qed.bot Fidelity regraded: Pentanacci π sequence urn:qed:change:fidelity:oeis:100478:F0 2026-09-28T11:57:19Z The fidelity grade for Pentanacci π sequence moved from F2 to F0. Formal status changed: a(n) = 3a(n−1) + a(n−2) − 3a(n−3) urn:qed:change:formal-status:oeis:103425:solved 2026-09-28T11:57:19Z The formal record now marks a(n) = 3a(n−1) + a(n−2) − 3a(n−3) as solved, previously open. Fidelity regraded: a(n) = 3a(n−1) + a(n−2) − 3a(n−3) urn:qed:change:fidelity:oeis:103425:F2 2026-09-28T11:57:19Z The fidelity grade for a(n) = 3a(n−1) + a(n−2) − 3a(n−3) moved from F0 to F2. Formal status changed: Smallest power with base>1 and exponent n without digit 0 urn:qed:change:formal-status:oeis:103662:mixed 2026-09-28T11:57:19Z The formal record now marks Smallest power with base>1 and exponent n without digit 0 as mixed, previously open.