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), (-1, 1, 0), (0, 0, 1), (1, 0, -1)}.
A148076
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), (-1, 1, 0), (0, 0, 1), (1, 0, -1)}.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =4a(4) =9a(5) =21a(6) =61a(7) =174a(8) =529a(9) =1641a(10) =5095a(11) =16033a(12) =53457a(13) =179040a(14) =611600a(15) =2114005a(16) =7286191a(17) =25434141a(18) =90624740a(19) =324820786a(20) =1175997883a(21) =4277780903a(22) =15565099278a(23) =57172451188a(24) =211915699815a(25) =789384452140
External references
- oeis: A148076