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, 0), (-1, 0, 1), (1, 0, 1), (1, 1, 0)}.
A150696
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, 0), (-1, 0, 1), (1, 0, 1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =26a(4) =120a(5) =441a(6) =2083a(7) =8212a(8) =39524a(9) =161407a(10) =784506a(11) =3286525a(12) =16071679a(13) =68518149a(14) =336585573a(15) =1454027576a(16) =7164711707a(17) =31273364279a(18) =154466987227a(19) =679824064884
External references
- oeis: A150696