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, 0, -1), (-1, 0, 0), (0, 1, 1), (1, -1, -1)}.
A148214
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, 0, -1), (-1, 0, 0), (0, 1, 1), (1, -1, -1)}.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =4a(4) =13a(5) =31a(6) =89a(7) =283a(8) =869a(9) =2669a(10) =8710a(11) =29650a(12) =96053a(13) =323265a(14) =1139344a(15) =3892404a(16) =13413223a(17) =47897051a(18) =170521940a(19) =599738400a(20) =2160736005a(21) =7889782075a(22) =28333177345a(23) =102944943493a(24) =380966207711
External references
- oeis: A148214