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,-1,1,2,3}.
A278395
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,-1,1,2,3}.
Terms
- a(0) =1a(1) =3a(2) =12a(3) =60a(4) =311a(5) =1674a(6) =9173a(7) =51002a(8) =286384a(9) =1620776a(10) =9228724a(11) =52810792a(12) =303447096a(13) =1749612736a(14) =10117583749a(15) =58656027314a(16) =340806249367
External references
- oeis: A278395