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), (-1, 0, 1), (-1, 1, -1), (0, -1, 1), (1, 0, 0)}.
A148032
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), (-1, 0, 1), (-1, 1, -1), (0, -1, 1), (1, 0, 0)}.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =3a(4) =8a(5) =17a(6) =51a(7) =131a(8) =407a(9) =1151a(10) =3648a(11) =11252a(12) =36653a(13) =118809a(14) =396854a(15) =1329494a(16) =4535199a(17) =15607323a(18) =54270912a(19) =190374303a(20) =673495642a(21) =2399088521a(22) =8606861861a(23) =31077805874a(24) =112828345565a(25) =411949470606
External references
- oeis: A148032