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), (0, 0, -1), (0, 0, 1), (0, 1, 0), (1, 0, 1)}.
A151098
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), (0, 0, -1), (0, 0, 1), (0, 1, 0), (1, 0, 1)}.
Terms
- a(0) =1a(1) =3a(2) =11a(3) =43a(4) =180a(5) =779a(6) =3451a(7) =15540a(8) =70890a(9) =326746a(10) =1518313a(11) =7102702a(12) =33411343a(13) =157912141a(14) =749357484a(15) =3568438872a(16) =17044813008a(17) =81634173640a(18) =391911036313
External references
- oeis: A151098