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, 0, 0), (0, -1, 0), (0, 1, -1), (0, 1, 1), (1, 0, 0)}.
A150499
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, 0, 0), (0, -1, 0), (0, 1, -1), (0, 1, 1), (1, 0, 0)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =25a(4) =101a(5) =414a(6) =1773a(7) =7680a(8) =34057a(9) =152318a(10) =691123a(11) =3155131a(12) =14542211a(13) =67335592a(14) =313918629a(15) =1468784715a(16) =6907256265a(17) =32576947186a(18) =154246370247a(19) =732063794715
External references
- oeis: A150499