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), (0, 0, -1), (0, 1, 1), (1, 0, 1), (1, 1, 0)}.
A151196
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), (0, 0, -1), (0, 1, 1), (1, 0, 1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =3a(2) =12a(3) =52a(4) =237a(5) =1105a(6) =5241a(7) =25141a(8) =121577a(9) =591495a(10) =2891010a(11) =14180892a(12) =69757821a(13) =343937533a(14) =1698947088a(15) =8405296184a(16) =41637856673a(17) =206489110369
External references
- oeis: A151196