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, 1), (0, -1, 1), (0, 0, 1), (0, 1, -1), (1, 1, 0)}.
A150649
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, 1), (0, -1, 1), (0, 0, 1), (0, 1, -1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =28a(4) =117a(5) =511a(6) =2291a(7) =10463a(8) =48435a(9) =226586a(10) =1068587a(11) =5072224a(12) =24203714a(13) =115998071a(14) =557962305a(15) =2692152543a(16) =13023978409a(17) =63151137877a(18) =306820781473
External references
- oeis: A150649