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, -1, 1), (-1, 1, -1), (1, 0, 1), (1, 1, 0)}.
A150373
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, -1, 1), (-1, 1, -1), (1, 0, 1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =23a(4) =95a(5) =355a(6) =1578a(7) =6274a(8) =28892a(9) =119136a(10) =560067a(11) =2365025a(12) =11269227a(13) =48392249a(14) =232747379a(15) =1012038954a(16) =4900368125a(17) =21515650107a(18) =104706189813a(19) =463307727667
External references
- oeis: A150373