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, 0), (0, -1, 0), (0, 1, 1), (1, 1, -1), (1, 1, 0)}.
A150798
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, 0), (0, -1, 0), (0, 1, 1), (1, 1, -1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =31a(4) =131a(5) =570a(6) =2539a(7) =11522a(8) =52928a(9) =245650a(10) =1149746a(11) =5415455a(12) =25653903a(13) =122084657a(14) =583293895a(15) =2796508450a(16) =13446891577a(17) =64828739768a(18) =313266670347
External references
- oeis: A150798