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, -1), (1, 0, 1), (1, 1, 0)}.
A150439
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, -1), (1, 0, 1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =24a(4) =101a(5) =392a(6) =1703a(7) =7119a(8) =31486a(9) =135870a(10) =610317a(11) =2689175a(12) =12179773a(13) =54466446a(14) =248384257a(15) =1121795909a(16) =5143391889a(17) =23410157731a(18) =107778940707a(19) =493502891246
External references
- oeis: A150439