Number of two-sided n-step prudent walks ending on the northeast corner of their box, avoiding more than two consecutive west steps and more than two consecutive south steps.

A178036

Number of two-sided n-step prudent walks ending on the northeast corner of their box, avoiding more than two consecutive west steps and more than two consecutive south steps.

Terms

    a(0) =1a(1) =2a(2) =4a(3) =10a(4) =24a(5) =58a(6) =140a(7) =340a(8) =828a(9) =2020a(10) =4934a(11) =12068a(12) =29556a(13) =72468a(14) =177846a(15) =436788a(16) =1073438a(17) =2576072

External references