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), (0, 1, -1), (0, 1, 1), (1, 0, 0), (1, 1, 1)}.
A151203
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), (0, 1, -1), (0, 1, 1), (1, 0, 0), (1, 1, 1)}.
Terms
- a(0) =1a(1) =3a(2) =12a(3) =53a(4) =244a(5) =1150a(6) =5513a(7) =26638a(8) =129726a(9) =634927a(10) =3119000a(11) =15370005a(12) =75910657a(13) =375609808a(14) =1861362004a(15) =9235122359a(16) =45866590554a(17) =227989444738
External references
- oeis: A151203