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), (0, 1, -1), (0, 1, 1), (1, 0, -1), (1, 1, 0)}.
A150542
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), (0, 1, -1), (0, 1, 1), (1, 0, -1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =26a(4) =103a(5) =431a(6) =1855a(7) =8172a(8) =36617a(9) =166316a(10) =763682a(11) =3537557a(12) =16506691a(13) =77503471a(14) =365818093a(15) =1734513028a(16) =8256719514a(17) =39439734441a(18) =188966919172a(19) =907847268968
External references
- oeis: A150542