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, 0, 1), (-1, 1, -1), (1, -1, -1), (1, 1, 1)}.
A149525
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, 0, 1), (-1, 1, -1), (1, -1, -1), (1, 1, 1)}.
Terms
- a(0) =1a(1) =1a(2) =5a(3) =11a(4) =51a(5) =159a(6) =727a(7) =2559a(8) =11869a(9) =44463a(10) =208201a(11) =811347a(12) =3834105a(13) =15378997a(14) =73237065a(15) =299822863a(16) =1435339553a(17) =5970172807a(18) =28706699111a(19) =120997982505a(20) =584079103003
External references
- oeis: A149525