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, 0, 1), (1, 0, -1), (1, 1, 0)}.
A150192
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, 0, 1), (1, 0, -1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =21a(4) =78a(5) =304a(6) =1231a(7) =5135a(8) =21902a(9) =95027a(10) =418304a(11) =1862817a(12) =8376414a(13) =37974948a(14) =173371141a(15) =796374923a(16) =3677865850a(17) =17066625367a(18) =79532418735a(19) =372042497296
External references
- oeis: A150192