Number of rooted toroidal maps with 3 vertices and n faces and no isthmuses.

A006426

Number of rooted toroidal maps with 3 vertices and n faces and no isthmuses.

Terms

    a(0) =10a(1) =340a(2) =5846a(3) =71372a(4) =706068a(5) =6052840a(6) =46759630a(7) =333746556a(8) =2238411692a(9) =14277544216a(10) =87376309020a(11) =516495616120

External references