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), (-1, 1, -1), (0, 1, 0), (1, -1, -1), (1, 0, 1)}.
A149998
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), (-1, 1, -1), (0, 1, 0), (1, -1, -1), (1, 0, 1)}.
Terms
- a(0) =1a(1) =2a(2) =5a(3) =17a(4) =59a(5) =214a(6) =823a(7) =3242a(8) =13035a(9) =53583a(10) =222985a(11) =939317a(12) =3999679a(13) =17161709a(14) =74215188a(15) =323187699a(16) =1415404300a(17) =6232387240a(18) =27573074455a(19) =122492697941a(20) =546267042755
External references
- oeis: A149998