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, 1), (0, 0, 1), (0, 1, 0), (1, 0, 0)}.
A151047
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, 1), (0, 0, 1), (0, 1, 0), (1, 0, 0)}.
Terms
- a(0) =1a(1) =3a(2) =10a(3) =35a(4) =132a(5) =524a(6) =2145a(7) =8924a(8) =37693a(9) =161604a(10) =701218a(11) =3068181a(12) =13515463a(13) =59931900a(14) =267372422a(15) =1198695390a(16) =5395604431a(17) =24377747242a(18) =110533789419a(19) =502767066982
External references
- oeis: A151047