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), (-1, 1, 0), (0, 1, 1), (1, -1, -1)}.
A148313
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), (-1, 1, 0), (0, 1, 1), (1, -1, -1)}.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =5a(4) =14a(5) =37a(6) =116a(7) =370a(8) =1183a(9) =3971a(10) =13722a(11) =47242a(12) =167992a(13) =601874a(14) =2180993a(15) =7999405a(16) =29583543a(17) =110326116a(18) =414785272a(19) =1568477396a(20) =5972561563a(21) =22861229453a(22) =87965677392a(23) =340135974318
External references
- oeis: A148313