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, 0, 0), (-1, 1, 1), (0, -1, 1), (1, 0, -1), (1, 0, 1)}.
A149383
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, 0, 0), (-1, 1, 1), (0, -1, 1), (1, 0, -1), (1, 0, 1)}.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =12a(4) =48a(5) =177a(6) =737a(7) =3029a(8) =12988a(9) =56091a(10) =246868a(11) =1096597a(12) =4924501a(13) =22280718a(14) =101576635a(15) =465761626a(16) =2147731327a(17) =9949376489a(18) =46289161625a(19) =216169270117
External references
- oeis: A149383