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, -1), (0, 1, 0), (1, 0, 1)}.
A151108
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, -1), (0, 1, 0), (1, 0, 1)}.
Terms
- a(0) =1a(1) =3a(2) =11a(3) =44a(4) =190a(5) =845a(6) =3836a(7) =17703a(8) =82684a(9) =389460a(10) =1847180a(11) =8810547a(12) =42212743a(13) =203000801a(14) =979324004a(15) =4737178009a(16) =22967327860a(17) =111576003043a(18) =542992102274
External references
- oeis: A151108