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), (1, 0, 0), (1, 1, -1)}.
A148202
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), (1, 0, 0), (1, 1, -1)}.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =4a(4) =12a(5) =34a(6) =117a(7) =380a(8) =1406a(9) =4999a(10) =19436a(11) =73281a(12) =294911a(13) =1158933a(14) =4783572a(15) =19380630a(16) =81559299a(17) =338222235a(18) =1445214303a(19) =6103689409a(20) =26403873389a(21) =113158587598a(22) =494494330837
External references
- oeis: A148202