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), (0, 1, 1), (1, -1, 1), (1, 0, 1), (1, 1, -1)}.
A150887
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), (0, 1, 1), (1, -1, 1), (1, 0, 1), (1, 1, -1)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =33a(4) =151a(5) =695a(6) =3313a(7) =15843a(8) =76947a(9) =374476a(10) =1836732a(11) =9022243a(12) =44508240a(13) =219816053a(14) =1088349343a(15) =5393319850a(16) =26768335661a(17) =132947167359a(18) =660965701420
External references
- oeis: A150887