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), (0, 1, 1), (1, -1, 0), (1, 0, -1), (1, 0, 1)}.
A150835
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), (0, 1, 1), (1, -1, 0), (1, 0, -1), (1, 0, 1)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =32a(4) =136a(5) =602a(6) =2721a(7) =12500a(8) =58125a(9) =272817a(10) =1289840a(11) =6134032a(12) =29312089a(13) =140632137a(14) =677003111a(15) =3268486893a(16) =15819064688a(17) =76727780376a(18) =372860744696
External references
- oeis: A150835