Number of genus 0 rooted planar maps with 4 faces and n vertices.

A000365

Number of genus 0 rooted planar maps with 4 faces and n vertices.

Terms

    a(0) =5a(1) =93a(2) =1030a(3) =8885a(4) =65954a(5) =442610a(6) =2762412a(7) =16322085a(8) =92400330a(9) =505403910a(10) =2687477780a(11) =13957496098a(12) =71053094420a(13) =355548314180

External references