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, 0), (-1, 1, 0), (1, -1, -1), (1, 0, 1)}.
A148627
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, 0), (-1, 1, 0), (1, -1, -1), (1, 0, 1)}.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =6a(4) =22a(5) =54a(6) =212a(7) =601a(8) =2431a(9) =7371a(10) =30743a(11) =98770a(12) =417771a(13) =1391484a(14) =5976843a(15) =20542382a(16) =89030876a(17) =312996298a(18) =1368809428a(19) =4909105143a(20) =21604671247a(21) =78696664164a(22) =348398872923
External references
- oeis: A148627