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), (0, 0, -1), (0, 1, -1), (0, 1, 0), (1, 0, 1)}.
A150222
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), (0, 0, -1), (0, 1, -1), (0, 1, 0), (1, 0, 1)}.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =21a(4) =84a(5) =341a(6) =1417a(7) =6096a(8) =26748a(9) =119130a(10) =536341a(11) =2438024a(12) =11173211a(13) =51593216a(14) =239712120a(15) =1119135769a(16) =5247643747a(17) =24707480877a(18) =116758305908a(19) =553480178855
External references
- oeis: A150222