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, 0), (0, 1, -1), (1, 0, 1), (1, 1, 0)}.
A150741
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, 0), (0, 1, -1), (1, 0, 1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =29a(4) =124a(5) =525a(6) =2319a(7) =10398a(8) =47216a(9) =216944a(10) =1005160a(11) =4686453a(12) =21996136a(13) =103666019a(14) =490819904a(15) =2331863129a(16) =11113282758a(17) =53115479147a(18) =254469530539
External references
- oeis: A150741