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, 0, 1), (0, 1, -1), (1, 0, 0), (1, 1, 0)}.
A150345
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, 0, 1), (0, 1, -1), (1, 0, 0), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =23a(4) =90a(5) =351a(6) =1450a(7) =6106a(8) =26200a(9) =114642a(10) =506213a(11) =2265623a(12) =10214369a(13) =46442227a(14) =212510931a(15) =977989172a(16) =4524166986a(17) =21020156561a(18) =98061954064a(19) =459095554959
External references
- oeis: A150345