Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 1), (-1, 0, 1), (0, 1, 1), (1, 0, -1), (1, 1, 0)}.
A150603
Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 1), (-1, 0, 1), (0, 1, 1), (1, 0, -1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =27a(4) =110a(5) =472a(6) =2077a(7) =9345a(8) =42672a(9) =197231a(10) =920109a(11) =4325028a(12) =20456323a(13) =97251702a(14) =464357938a(15) =2225412247a(16) =10699151819a(17) =51580477446a(18) =249269706390
External references
- oeis: A150603