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), (0, 0, 1), (0, 1, -1), (0, 1, 0), (1, 0, 0)}.
A151057
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), (0, 0, 1), (0, 1, -1), (0, 1, 0), (1, 0, 0)}.
Terms
- a(0) =1a(1) =3a(2) =10a(3) =37a(4) =147a(5) =609a(6) =2589a(7) =11247a(8) =49728a(9) =222781a(10) =1008483a(11) =4606395a(12) =21201393a(13) =98198734a(14) =457304438a(15) =2139893842a(16) =10055475710a(17) =47425035188a(18) =224408115290
External references
- oeis: A151057