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, 0), (1, 0, -1), (1, 0, 0), (1, 1, 0)}.
A150324
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, 0), (1, 0, -1), (1, 0, 0), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =22a(4) =86a(5) =316a(6) =1314a(7) =5236a(8) =22608a(9) =94591a(10) =418720a(11) =1809437a(12) =8152191a(13) =36042798a(14) =164532212a(15) =739869381a(16) =3411910087a(17) =15543863248a(18) =72262806914a(19) =332620036343
External references
- oeis: A150324