SeqWeb

SeqWeb is to the OEIS as DBpedia is to Wikipedia.

SeqWeb extends the OEIS—one of the world’s largest mathematical knowledge bases—with an independent, open, knowledge graph resource.
SeqWeb’s mission is to further empower and amplify the discovery and development of this knowledge.
SeqWeb empowers a federation of community-driven deployments: seqweb.org is the public instance, but anyone can develop and run their own.
SeqWeb is in active development with core infrastructure, architecture and ontology design and implementation underway.
SeqWeb welcomes interested potential early collaborators, academic partners, and supporters.