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, 0), (1, -1, -1), (1, 0, 1), (1, 1, 0)}.
A150368
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, 0), (1, -1, -1), (1, 0, 1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =23a(4) =94a(5) =357a(6) =1519a(7) =6195a(8) =26950a(9) =114187a(10) =504639a(11) =2190082a(12) =9791313a(13) =43205127a(14) =194850625a(15) =870315396a(16) =3951836163a(17) =17815087768a(18) =81338785555a(19) =369345445042
External references
- oeis: A150368