The OEIS reached a milestone today, with 400000 published sequences now in the database

From Sean A. Irvine on SeqFan: groups.google.com/g/seqfan/c/AabnT7B1n6c This is also confirmed by today's snapshot from "stripped.gz". For those interested in statistics: # OEIS Sequence Data ( oeis.org/stripped.gz ) # Last Modified: October 6 04:25 UTC 2026 A numbers: 400007 Nominations for Sequence A400000: oeis.org/wiki/Nominations_for_Sequence_A400000