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, 1, 0), (0, 0, -1), (0, 0, 1), (1, 0, 1)}.
A150336
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, 1, 0), (0, 0, -1), (0, 0, 1), (1, 0, 1)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =23a(4) =84a(5) =320a(6) =1262a(7) =5114a(8) =21083a(9) =88154a(10) =372868a(11) =1593621a(12) =6871015a(13) =29853188a(14) =130548316a(15) =574102027a(16) =2537245436a(17) =11263169847a(18) =50200245088a(19) =224556548825
External references
- oeis: A150336