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, -1, 1), (0, 1, 1), (1, 0, 1), (1, 1, -1)}.
A150274
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, -1, 1), (0, 1, 1), (1, 0, 1), (1, 1, -1)}.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =22a(4) =94a(5) =370a(6) =1682a(7) =7138a(8) =32882a(9) =146614a(10) =682866a(11) =3120066a(12) =14730854a(13) =68233982a(14) =325456138a(15) =1524123022a(16) =7313477578a(17) =34576073774a(18) =166582262834a(19) =793435987550
External references
- oeis: A150274