Robuta

https://dmtcs.episciences.org/articles/11050 Bijective proofs for Eulerian numbers of types B and D | Discrete Mathematics & Theoretical... b and d eulerian numbers discrete mathematics bijective proofs https://cris.iucc.ac.il/en/publications/some-combinatorial-identities-of-the-r-whitney-eulerian-numbers/ Some combinatorial identities of the r-whitney-eulerian numbers - Israeli Research Community Portal of the eulerian numbers research community combinatorial identities