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), (1, 0, 1), (1, 1, 0), (1, 1, 1)}.
A151215
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), (1, 0, 1), (1, 1, 0), (1, 1, 1)}.
Terms
- a(0) =1a(1) =3a(2) =13a(3) =55a(4) =259a(5) =1182a(6) =5732a(7) =27022a(8) =132688a(9) =636513a(10) =3145447a(11) =15249245a(12) =75633090a(13) =369233676a(14) =1835494231a(15) =9004360769a(16) =44828502214a(17) =220694542540
External references
- oeis: A151215