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, 0, -1), (0, 0, 1), (0, 1, 1), (1, 0, 0)}.
A151041
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, 0, -1), (0, 0, 1), (0, 1, 1), (1, 0, 0)}.
Terms
- a(0) =1a(1) =3a(2) =9a(3) =33a(4) =129a(5) =511a(6) =2110a(7) =8855a(8) =37630a(9) =162562a(10) =707441a(11) =3105186a(12) =13739266a(13) =61089049a(14) =273188714a(15) =1227301479a(16) =5534051578a(17) =25051273980a(18) =113748350238a(19) =517968113869
External references
- oeis: A151041