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, 0, 1), (1, 0, 0), (1, 0, 1)}.
A151050
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, 0, 1), (1, 0, 0), (1, 0, 1)}.
Terms
- a(0) =1a(1) =3a(2) =10a(3) =37a(4) =143a(5) =585a(6) =2465a(7) =10616a(8) =46464a(9) =206309a(10) =927790a(11) =4212640a(12) =19276458a(13) =88787800a(14) =411449663a(15) =1916848749a(16) =8970470541a(17) =42143168591a(18) =198683134963a(19) =939706509220
External references
- oeis: A151050