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, 1, -1), (1, -1, 0), (1, 0, 1)}.
A148123
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, 1, -1), (1, -1, 0), (1, 0, 1)}.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =4a(4) =11a(5) =26a(6) =75a(7) =200a(8) =615a(9) =1734a(10) =5590a(11) =16378a(12) =54142a(13) =164546a(14) =551565a(15) =1719056a(16) =5850985a(17) =18558052a(18) =63934146a(19) =205992946a(20) =715984848a(21) =2338641028a(22) =8186888340a(23) =27034793372a(24) =95278888170a(25) =317483080156
External references
- oeis: A148123