Unicursal (i.e., possessing an Eulerian path) planar rooted maps with n edges.

A003584

Unicursal (i.e., possessing an Eulerian path) planar rooted maps with n edges.

Terms

    a(0) =1a(1) =2a(2) =9a(3) =52a(4) =336a(5) =2304a(6) =16368a(7) =118976a(8) =878592a(9) =6562816a(10) =49447424a(11) =375072768a(12) =2860343296a(13) =21909012480a(14) =168425533440

External references