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), (0, 1, 0), (1, 0, 1), (1, 1, -1), (1, 1, 0)}.
A151158
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), (0, 1, 0), (1, 0, 1), (1, 1, -1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =3a(2) =11a(3) =47a(4) =209a(5) =965a(6) =4544a(7) =21675a(8) =104486a(9) =507033a(10) =2474364a(11) =12124407a(12) =59603489a(13) =293779224a(14) =1451002573a(15) =7179019271a(16) =35568884870a(17) =176435554251a(18) =876051062736
External references
- oeis: A151158