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, 1, -1), (0, 1, 0), (1, 0, 0), (1, 1, 1)}.
A151147
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, 1, -1), (0, 1, 0), (1, 0, 0), (1, 1, 1)}.
Terms
- a(0) =1a(1) =3a(2) =11a(3) =47a(4) =205a(5) =923a(6) =4241a(7) =19681a(8) =92401a(9) =436841a(10) =2077248a(11) =9929048a(12) =47637094a(13) =229346120a(14) =1107335719a(15) =5359309186a(16) =25994970376a(17) =126319324947a(18) =614849971215
External references
- oeis: A151147