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, 0), (0, 1, 1), (1, 0, 0)}.
A151042
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, 0), (0, 1, 1), (1, 0, 0)}.
Terms
- a(0) =1a(1) =3a(2) =9a(3) =33a(4) =129a(5) =511a(6) =2110a(7) =8883a(8) =37770a(9) =163078a(10) =711157a(11) =3122349a(12) =13813470a(13) =61489000a(14) =274994926a(15) =1235534550a(16) =5574180288a(17) =25233308678a(18) =114589332333a(19) =521906125367
External references
- oeis: A151042