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, 0, 1), (0, 0, 1), (0, 1, -1), (1, 0, 1)}.
A150402
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, 0, 1), (0, 0, 1), (0, 1, -1), (1, 0, 1)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =24a(4) =93a(5) =363a(6) =1497a(7) =6207a(8) =26461a(9) =113443a(10) =494208a(11) =2163605a(12) =9568525a(13) =42495997a(14) =190036750a(15) =852878044a(16) =3846664090a(17) =17402240589a(18) =79021622447a(19) =359760117542
External references
- oeis: A150402