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, -1), (-1, 0, 0), (-1, 0, 1), (1, -1, 1), (1, 1, 0)}.
A149283
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, -1), (-1, 0, 0), (-1, 0, 1), (1, -1, 1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =11a(4) =44a(5) =146a(6) =642a(7) =2239a(8) =10080a(9) =37666a(10) =171218a(11) =663592a(12) =3053331a(13) =12116439a(14) =56196754a(15) =227206025a(16) =1059367428a(17) =4350268844a(18) =20366889356a(19) =84658346439a(20) =397770494430
External references
- oeis: A149283