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, 0, 1), (-1, 1, 1), (1, -1, 0), (1, 0, 1), (1, 1, -1)}.
A149486
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, 0, 1), (-1, 1, 1), (1, -1, 0), (1, 0, 1), (1, 1, -1)}.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =13a(4) =59a(5) =237a(6) =1117a(7) =4876a(8) =23484a(9) =107063a(10) =521987a(11) =2442075a(12) =11995134a(13) =57056591a(14) =281598695a(15) =1354666528a(16) =6707399025a(17) =32526399379a(18) =161411737737a(19) =787355791682
External references
- oeis: A149486