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, 1, -1), (1, 0, 1), (1, 1, 0)}.
A150412
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, 1, -1), (1, 0, 1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =24a(4) =95a(5) =373a(6) =1553a(7) =6488a(8) =27816a(9) =120095a(10) =525451a(11) =2314243a(12) =10274611a(13) =45865522a(14) =205856259a(15) =927951641a(16) =4199784173a(17) =19073273163a(18) =86892341253a(19) =396957455389
External references
- oeis: A150412