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), (0, 0, -1), (0, 1, -1), (1, 0, 0)}.
A148286
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), (0, 0, -1), (0, 1, -1), (1, 0, 0)}.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =5a(4) =12a(5) =35a(6) =101a(7) =305a(8) =998a(9) =3192a(10) =10721a(11) =37044a(12) =126994a(13) =452386a(14) =1619673a(15) =5826276a(16) =21492264a(17) =79114692a(18) =294519731a(19) =1111169430a(20) =4186163252a(21) =15968539928a(22) =61242924850a(23) =235275484768a(24) =913138496950
External references
- oeis: A148286