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), (0, 0, 1), (0, 1, 0), (1, 0, 0), (1, 1, 1)}.
A151247
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), (0, 0, 1), (0, 1, 0), (1, 0, 0), (1, 1, 1)}.
Terms
- a(0) =1a(1) =4a(2) =17a(3) =75a(4) =345a(5) =1618a(6) =7703a(7) =36998a(8) =179083a(9) =871140a(10) =4256643a(11) =20864175a(12) =102558243a(13) =505175772a(14) =2493153945a(15) =12322236807a(16) =60984538737a(17) =302142060934
External references
- oeis: A151247