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, -1), (-1, 0, 1), (0, 1, 0), (1, 0, 1), (1, 1, 0)}.
A151127
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, -1), (-1, 0, 1), (0, 1, 0), (1, 0, 1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =3a(2) =11a(3) =45a(4) =195a(5) =863a(6) =3918a(7) =18099a(8) =84257a(9) =396308a(10) =1877474a(11) =8934493a(12) =42733799a(13) =205223131a(14) =988269150a(15) =4773483124a(16) =23114429524a(17) =112134123653a(18) =545063420222
External references
- oeis: A151127