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, 1), (0, 0, 1), (0, 1, 0), (1, 0, 1), (1, 1, -1)}.
A151133
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, 1), (0, 0, 1), (0, 1, 0), (1, 0, 1), (1, 1, -1)}.
Terms
- a(0) =1a(1) =3a(2) =11a(3) =45a(4) =199a(5) =907a(6) =4230a(7) =20033a(8) =95911a(9) =462904a(10) =2247962a(11) =10968589a(12) =53721197a(13) =263906906a(14) =1299630087a(15) =6413037954a(16) =31698197261a(17) =156896920042a(18) =777515340136
External references
- oeis: A151133