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, 1, -1), (0, 1, 0), (1, 0, 1), (1, 1, 1)}.
A151204
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, 1, -1), (0, 1, 0), (1, 0, 1), (1, 1, 1)}.
Terms
- a(0) =1a(1) =3a(2) =12a(3) =54a(4) =247a(5) =1157a(6) =5525a(7) =26580a(8) =128853a(9) =628206a(10) =3074634a(11) =15098654a(12) =74332605a(13) =366717536a(14) =1812346379a(15) =8969290288a(16) =44442880247a(17) =220439573132
External references
- oeis: A151204