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), (0, 0, 1), (0, 1, 0), (1, -1, -1)}.
A149827
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), (0, 0, 1), (0, 1, 0), (1, -1, -1)}.
Terms
- a(0) =1a(1) =2a(2) =4a(3) =10a(4) =28a(5) =85a(6) =282a(7) =947a(8) =3248a(9) =11612a(10) =42236a(11) =156527a(12) =590013a(13) =2243611a(14) =8656634a(15) =33776331a(16) =132719867a(17) =526382525a(18) =2102410851a(19) =8450274733a(20) =34194734301a(21) =139059227367a(22) =568371318740
External references
- oeis: A149827