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, 1, -1), (0, 1, 0), (1, 0, -1), (1, 1, 1)}.
A150456
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, 1, -1), (0, 1, 0), (1, 0, -1), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =25a(4) =95a(5) =384a(6) =1581a(7) =6650a(8) =28445a(9) =122882a(10) =536955a(11) =2363807a(12) =10478253a(13) =46724020a(14) =209360037a(15) =942481707a(16) =4259000203a(17) =19313431126a(18) =87856492233a(19) =400762816537
External references
- oeis: A150456