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, 0, 1), (0, 1, 0), (1, 1, 1)}.
A151182
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, 0, 1), (0, 1, 0), (1, 1, 1)}.
Terms
- a(0) =1a(1) =3a(2) =12a(3) =51a(4) =225a(5) =1018a(6) =4682a(7) =21792a(8) =102357a(9) =484186a(10) =2303423a(11) =11009216a(12) =52822832a(13) =254278092a(14) =1227475473a(15) =5939756449a(16) =28803320496a(17) =139934359516a(18) =680961029062
External references
- oeis: A151182