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), (0, 0, -1), (0, 0, 1), (0, 1, 1), (1, 0, 1)}.
A151164
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), (0, 0, -1), (0, 0, 1), (0, 1, 1), (1, 0, 1)}.
Terms
- a(0) =1a(1) =3a(2) =12a(3) =47a(4) =204a(5) =888a(6) =3998a(7) =18115a(8) =83266a(9) =385720a(10) =1799850a(11) =8449820a(12) =39852336a(13) =188798366a(14) =897534884a(15) =4280688461a(16) =20472884382a(17) =98154803250a(18) =471644867446
External references
- oeis: A151164