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, 0), (-1, 1, 1), (1, 0, 1), (1, 1, -1)}.
A149414
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, 0), (-1, 1, 1), (1, 0, 1), (1, 1, -1)}.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =12a(4) =53a(5) =177a(6) =828a(7) =3094a(8) =14824a(9) =58033a(10) =281684a(11) =1141169a(12) =5586654a(13) =23180041a(14) =114064351a(15) =481510517a(16) =2378380394a(17) =10178922398a(18) =50407914795a(19) =218056976919
External references
- oeis: A149414