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, 0, 0), (-1, 0, 1), (0, 1, -1), (0, 1, 0), (1, -1, 0)}.
A148301
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, 0, 0), (-1, 0, 1), (0, 1, -1), (0, 1, 0), (1, -1, 0)}.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =5a(4) =13a(5) =37a(6) =114a(7) =365a(8) =1212a(9) =4174a(10) =14744a(11) =53219a(12) =196128a(13) =735061a(14) =2795325a(15) =10775893a(16) =42033257a(17) =165681405a(18) =659428514a(19) =2647465405a(20) =10712775912a(21) =43665811166a(22) =179171486078a(23) =739683634853
External references
- oeis: A148301