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), (1, 0, 0), (1, 1, 0), (1, 1, 1)}.
A151183
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), (1, 0, 0), (1, 1, 0), (1, 1, 1)}.
Terms
- a(0) =1a(1) =3a(2) =12a(3) =51a(4) =225a(5) =1026a(6) =4726a(7) =22114a(8) =104174a(9) =494451a(10) =2359312a(11) =11304641a(12) =54375383a(13) =262284928a(14) =1268589445a(15) =6149011950a(16) =29863315708a(17) =145281743211a(18) =707832694711
External references
- oeis: A151183