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), (0, 1, -1), (0, 1, 1), (1, 0, 0), (1, 1, 0)}.
A151137
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), (0, 1, -1), (0, 1, 1), (1, 0, 0), (1, 1, 0)}.
Terms
- a(0) =1a(1) =3a(2) =11a(3) =46a(4) =202a(5) =918a(6) =4272a(7) =20146a(8) =96096a(9) =462150a(10) =2236092a(11) =10874695a(12) =53093518a(13) =260052412a(14) =1277167839a(15) =6286177214a(16) =30998213081a(17) =153099530722a(18) =757172956854
External references
- oeis: A151137