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), (-1, 1, 0), (0, 0, 1), (0, 1, -1), (1, -1, 0)}.
A148103
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), (-1, 1, 0), (0, 0, 1), (0, 1, -1), (1, -1, 0)}.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =4a(4) =10a(5) =26a(6) =81a(7) =244a(8) =819a(9) =2695a(10) =9463a(11) =32922a(12) =120808a(13) =437836a(14) =1659640a(15) =6217694a(16) =24120576a(17) =92725987a(18) =366692792a(19) =1438275924a(20) =5781789727a(21) =23060129968a(22) =93964095455a(23) =380158396326
External references
- oeis: A148103