Number of two-sided n-step prudent walks ending at the northeast corner of their boxes, avoiding two consecutive west steps and south steps.
A190794
Number of two-sided n-step prudent walks ending at the northeast corner of their boxes, avoiding two consecutive west steps and south steps.
Terms
- a(0) =1a(1) =2a(2) =4a(3) =10a(4) =24a(5) =56a(6) =130a(7) =306a(8) =726a(9) =1726a(10) =4106a(11) =9784a(12) =9784a(13) =23356a(14) =55826a(15) =133550a(16) =319716a(17) =765906a(18) =1835856
External references
- oeis: A190794