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, 1, 1), (0, 1, -1), (0, 1, 0), (1, -1, 1)}.
A148432
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, 1, 1), (0, 1, -1), (0, 1, 0), (1, -1, 1)}.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =5a(4) =19a(5) =61a(6) =231a(7) =829a(8) =3411a(9) =13174a(10) =55582a(11) =224050a(12) =967760a(13) =4025392a(14) =17659214a(15) =75079047a(16) =333251508a(17) =1441084386a(18) =6455852339a(19) =28282925801a(20) =127631409983a(21) =565049348637
External references
- oeis: A148432