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), (0, -1, 0), (0, 1, 1), (1, 1, -1)}.
A148834
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), (0, -1, 0), (0, 1, 1), (1, 1, -1)}.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =8a(4) =27a(5) =90a(6) =314a(7) =1100a(8) =4097a(9) =15379a(10) =58904a(11) =226907a(12) =884995a(13) =3490548a(14) =13923584a(15) =55904938a(16) =225959563a(17) =917849212a(18) =3749844940a(19) =15409605006a(20) =63632836257a(21) =263813965837
External references
- oeis: A148834