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, 0, 1), (-1, 1, 0), (1, -1, -1), (1, 0, 1)}.
A148628
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, 0, 1), (-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) =7403a(10) =30839a(11) =98930a(12) =419323a(13) =1398292a(14) =6000768a(15) =20625494a(16) =89442109a(17) =314563659a(18) =1375653111a(19) =4932398161a(20) =21712296506a(21) =79108779880a(22) =350198380740
External references
- oeis: A148628