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, 0), (1, -1, 1), (1, 0, -1), (1, 1, 0)}.
A149301
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, 0), (1, -1, 1), (1, 0, -1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =11a(4) =46a(5) =168a(6) =731a(7) =2979a(8) =13401a(9) =57661a(10) =265461a(11) =1181726a(12) =5522830a(13) =25155711a(14) =118893172a(15) =550284353a(16) =2622755672a(17) =12286768851a(18) =58931031929a(19) =278651004826
External references
- oeis: A149301