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, 0, 0), (-1, 0, 1), (0, 0, -1), (0, 1, 0), (1, -1, 0)}.
A148297
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, 0, 0), (-1, 0, 1), (0, 0, -1), (0, 1, 0), (1, -1, 0)}.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =5a(4) =13a(5) =36a(6) =111a(7) =349a(8) =1133a(9) =3835a(10) =13299a(11) =46793a(12) =168540a(13) =617598a(14) =2288874a(15) =8594852a(16) =32693547a(17) =125485318a(18) =485873816a(19) =1898627904a(20) =7475334190a(21) =29623307282a(22) =118180762246a(23) =474383981552
External references
- oeis: A148297