Number of one-sided prudent walks from (0,0) to (n,n), with 3+n east steps, 3 west steps and n north steps.
A189769
Number of one-sided prudent walks from (0,0) to (n,n), with 3+n east steps, 3 west steps and n north steps.
Terms
- a(0) =2a(1) =24a(2) =200a(3) =1400a(4) =8820a(5) =51744a(6) =288288a(7) =1544400a(8) =8022300a(9) =40646320a(10) =201753552a(11) =984312784a(12) =4732273000a(13) =22465296000a(14) =105479913600a(15) =490481598240
External references
- oeis: A189769