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, 0), (-1, 1, -1), (0, 1, -1), (1, -1, 1), (1, 0, 1)}.
A148883
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, 0), (-1, 1, -1), (0, 1, -1), (1, -1, 1), (1, 0, 1)}.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =8a(4) =30a(5) =97a(6) =380a(7) =1432a(8) =5730a(9) =23215a(10) =95928a(11) =402954a(12) =1715098a(13) =7372699a(14) =32074694a(15) =140435319a(16) =620668756a(17) =2758615766a(18) =12342172004a(19) =55515576430a(20) =250924509615
External references
- oeis: A148883