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, 1), (-1, 0, 0), (0, 1, 1), (1, 0, -1), (1, 0, 0)}.
A150245
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, 1), (-1, 0, 0), (0, 1, 1), (1, 0, -1), (1, 0, 0)}.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =22a(4) =84a(5) =342a(6) =1444a(7) =6190a(8) =27257a(9) =121392a(10) =547622a(11) =2497948a(12) =11472385a(13) =53116882a(14) =247297901a(15) =1157377507a(16) =5442548993a(17) =25689616344a(18) =121709902926a(19) =578407050288
External references
- oeis: A150245