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, 0, -1), (1, 0, 1), (1, 1, 0)}.
A150735
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, 0, -1), (1, 0, 1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =29a(4) =122a(5) =514a(6) =2254a(7) =10027a(8) =45410a(9) =207523a(10) =959224a(11) =4462832a(12) =20905920a(13) =98460678a(14) =465872363a(15) =2213026310a(16) =10550448654a(17) =50449683620a(18) =241900053918
External references
- oeis: A150735