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, -1), (0, 1, 1), (1, -1, 0), (1, 1, 1)}.
A150750
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, -1), (0, 1, 1), (1, -1, 0), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =29a(4) =127a(5) =526a(6) =2420a(7) =10624a(8) =49914a(9) =226414a(10) =1076960a(11) =4987976a(12) =23924425a(13) =112344643a(14) =542087643a(15) =2571154955a(16) =12461595847a(17) =59550464104a(18) =289620932455
External references
- oeis: A150750