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, 0), (-1, 1, -1), (0, 0, 1), (0, 1, -1), (1, -1, 1)}.
A148148
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, 0), (-1, 1, -1), (0, 0, 1), (0, 1, -1), (1, -1, 1)}.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =4a(4) =11a(5) =29a(6) =96a(7) =298a(8) =1054a(9) =3583a(10) =13186a(11) =47814a(12) =181866a(13) =689996a(14) =2694846a(15) =10555991a(16) =42124128a(17) =168981868a(18) =686507904a(19) =2805640764a(20) =11570860322a(21) =47999433566a(22) =200491056182a(23) =841954166578
External references
- oeis: A148148