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), (0, 0, -1), (0, 1, -1), (0, 1, 1), (1, 0, 1)}.
A150712
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), (0, 0, -1), (0, 1, -1), (0, 1, 1), (1, 0, 1)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =27a(4) =122a(5) =499a(6) =2214a(7) =9842a(8) =44530a(9) =203920a(10) =940733a(11) =4372177a(12) =20483297a(13) =96217438a(14) =454871743a(15) =2156838988a(16) =10261591892a(17) =48987161073a(18) =234370298197
External references
- oeis: A150712