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, -1), (-1, 0, 1), (0, 1, 1), (1, 0, 0), (1, 1, 0)}.
A151118
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, -1), (-1, 0, 1), (0, 1, 1), (1, 0, 0), (1, 1, 0)}.
Terms
- a(0) =1a(1) =3a(2) =11a(3) =45a(4) =193a(5) =852a(6) =3840a(7) =17629a(8) =81756a(9) =382418a(10) =1803203a(11) =8553116a(12) =40750413a(13) =194975381a(14) =936347034a(15) =4509552201a(16) =21773870482a(17) =105385194491a(18) =511094275209
External references
- oeis: A151118