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), (-1, 1, -1), (-1, 1, 1), (1, 0, 0)}.
A148070
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), (-1, 1, -1), (-1, 1, 1), (1, 0, 0)}.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =3a(4) =12a(5) =25a(6) =97a(7) =217a(8) =984a(9) =2409a(10) =10215a(11) =25487a(12) =118874a(13) =312013a(14) =1396444a(15) =3700827a(16) =17618644a(17) =48201953a(18) =221644603a(19) =608941279a(20) =2931135298a(21) =8236542965a(22) =38529196470a(23) =108470810209a(24) =526019556566
External references
- oeis: A148070