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, 1), (1, 1, 0)}.
A151134
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, 1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =3a(2) =11a(3) =46a(4) =199a(5) =886a(6) =4041a(7) =18650a(8) =87067a(9) =409948a(10) =1942194a(11) =9252987a(12) =44275380a(13) =212631652a(14) =1024425845a(15) =4948669739a(16) =23961382923a(17) =116258790149a(18) =565088984403
External references
- oeis: A151134