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, 0, 1), (1, 1, -1)}.
A148894
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, 0, 1), (1, 1, -1)}.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =8a(4) =31a(5) =102a(6) =396a(7) =1462a(8) =5997a(9) =23434a(10) =97554a(11) =399179a(12) =1698051a(13) =7092038a(14) =30592688a(15) =130707443a(16) =569802720a(17) =2464058629a(18) =10856547093a(19) =47528837573a(20) =210762034726a(21) =930763267221
External references
- oeis: A148894