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), (-1, 1, 1), (1, -1, 1), (1, 0, 1), (1, 1, -1)}.
A149484
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), (-1, 1, 1), (1, -1, 1), (1, 0, 1), (1, 1, -1)}.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =13a(4) =58a(5) =231a(6) =1084a(7) =4728a(8) =22723a(9) =103602a(10) =504562a(11) =2361704a(12) =11593006a(13) =55174776a(14) =272199900a(15) =1310139935a(16) =6485171356a(17) =31463283353a(18) =156106431306a(19) =761779721856
External references
- oeis: A149484