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, 0), (1, -1, 0), (1, 1, -1), (1, 1, 1)}.
A149744
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, 0), (1, -1, 0), (1, 1, -1), (1, 1, 1)}.
Terms
- a(0) =1a(1) =1a(2) =5a(3) =17a(4) =79a(5) =299a(6) =1435a(7) =6015a(8) =28977a(9) =127111a(10) =615779a(11) =2781585a(12) =13528281a(13) =62333163a(14) =304059931a(15) =1420849033a(16) =6947386979a(17) =32805454397a(18) =160719098405a(19) =765023055849
External references
- oeis: A149744