Number of positive meanders (walks starting at the origin and ending at any altitude > 0 that never touch or go below the x-axis in between) with n steps from {-3,-2,-1,0,1,2,3}.
A278392
Number of positive meanders (walks starting at the origin and ending at any altitude > 0 that never touch or go below the x-axis in between) with n steps from {-3,-2,-1,0,1,2,3}.
Terms
- a(0) =1a(1) =3a(2) =15a(3) =87a(4) =530a(5) =3329a(6) =21316a(7) =138345a(8) =906853a(9) =5989967a(10) =39804817a(11) =265812731a(12) =1782288408a(13) =11991201709a(14) =80911836411a(15) =547334588037
External references
- oeis: A278392