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, 0, 0), (1, 0, -1), (1, 1, 0)}.
A149093
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, 0, 0), (1, 0, -1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =8a(4) =32a(5) =84a(6) =346a(7) =1035a(8) =4398a(9) =14222a(10) =61684a(11) =210612a(12) =926902a(13) =3292765a(14) =14655294a(15) =53664171a(16) =240961436a(17) =903803156a(18) =4087224128a(19) =15633002424a(20) =71112783970a(21) =276447837298
External references
- oeis: A149093