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), (1, -1, -1), (1, 1, -1)}.
A148225
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), (1, -1, -1), (1, 1, -1)}.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =4a(4) =13a(5) =31a(6) =99a(7) =291a(8) =961a(9) =3015a(10) =10230a(11) =34312a(12) =119249a(13) =409683a(14) =1454025a(15) =5182995a(16) =18523533a(17) =67012371a(18) =245232291a(19) =896656968a(20) =3309285901a(21) =12290521562a(22) =45804467416a(23) =171635860027a(24) =645265019687
External references
- oeis: A148225