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, 0), (0, -1, 0), (0, 1, -1), (0, 1, 0), (1, 0, 1)}.
A150559
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, 0), (0, -1, 0), (0, 1, -1), (0, 1, 0), (1, 0, 1)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =26a(4) =106a(5) =441a(6) =1913a(7) =8405a(8) =37758a(9) =170982a(10) =784866a(11) =3623326a(12) =16879640a(13) =78965889a(14) =371797947a(15) =1756213725a(16) =8335157567a(17) =39660909579a(18) =189405764982a(19) =906414415367
External references
- oeis: A150559