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, 0, 1), (-1, 1, 1), (0, 1, 0), (1, -1, 1), (1, 0, -1)}.
A148485
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, 0, 1), (-1, 1, 1), (0, 1, 0), (1, -1, 1), (1, 0, -1)}.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =6a(4) =20a(5) =77a(6) =310a(7) =1287a(8) =5507a(9) =23997a(10) =106461a(11) =478855a(12) =2179053a(13) =10013878a(14) =46395636a(15) =216471174a(16) =1016036750a(17) =4793581181a(18) =22717231101a(19) =108081903944a(20) =516000919269
External references
- oeis: A148485