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, 0), (1, -1, 1)}.
A148649
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, 0), (1, -1, 1)}.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =6a(4) =24a(5) =60a(6) =247a(7) =715a(8) =3084a(9) =9635a(10) =42609a(11) =141161a(12) =634379a(13) =2191937a(14) =9980879a(15) =35608441a(16) =163723832a(17) =599346018a(18) =2776936507a(19) =10380342041a(20) =48399637454a(21) =184092697969a(22) =862840374845
External references
- oeis: A148649