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, 1), (0, 1, -1), (1, -1, 0), (1, 1, 1)}.
A149776
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, 1), (0, 1, -1), (1, -1, 0), (1, 1, 1)}.
Terms
- a(0) =1a(1) =1a(2) =5a(3) =19a(4) =79a(5) =337a(6) =1471a(7) =6583a(8) =30005a(9) =138107a(10) =642385a(11) =3006461a(12) =14166593a(13) =67079683a(14) =319162579a(15) =1524296757a(16) =7305132769a(17) =35112906661a(18) =169209219035a(19) =817320823289
External references
- oeis: A149776