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, 0, 1), (1, -1, 1), (1, 1, -1), (1, 1, 0)}.
A149302
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, 0, 1), (1, -1, 1), (1, 1, -1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =11a(4) =46a(5) =172a(6) =750a(7) =3120a(8) =14087a(9) =61571a(10) =284436a(11) =1281379a(12) =6008651a(13) =27633271a(14) =130944600a(15) =611154458a(16) =2918673524a(17) =13771848825a(18) =66164267793a(19) =314806106581
External references
- oeis: A149302