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), (0, -1, 1), (0, 1, 1), (1, 0, -1), (1, 1, -1)}.
A149467
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), (0, -1, 1), (0, 1, 1), (1, 0, -1), (1, 1, -1)}.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =13a(4) =54a(5) =211a(6) =900a(7) =3864a(8) =17140a(9) =76671a(10) =348895a(11) =1600022a(12) =7409257a(13) =34544983a(14) =162084082a(15) =764339635a(16) =3621694614a(17) =17226889200a(18) =82230946010a(19) =393754786454
External references
- oeis: A149467