Number of vertices in a Y-shaped polygon with equal arms of length n (see the Comments in A335861 for definition).
A337790
Number of vertices in a Y-shaped polygon with equal arms of length n (see the Comments in A335861 for definition).
Terms
- a(0) =3a(1) =57a(2) =306a(3) =837a(4) =1335a(5) =2073a(6) =3033a(7) =4395a(8) =6147a(9) =8469a(10) =11253a(11) =14907a(12) =19263a(13) =24819a(14) =31197a(15) =38823a(16) =47619
External references
- oeis: A337790