Number of planar maps with an external face and n internal triangular faces.
A378190
Number of planar maps with an external face and n internal triangular faces.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =24a(4) =100a(5) =586a(6) =3725a(7) =26532a(8) =198081a(9) =1539550a(10) =12274565a(11) =99959181a(12) =827795678a(13) =6954099320a(14) =59138955508a(15) =508331799502
External references
- oeis: A378190