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), (-1, -1, 0), (0, 0, 1), (0, 1, -1), (1, 0, 1)}.
A150035
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), (-1, -1, 0), (0, 0, 1), (0, 1, -1), (1, 0, 1)}.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =17a(4) =62a(5) =220a(6) =841a(7) =3189a(8) =12794a(9) =51277a(10) =209888a(11) =865350a(12) =3629443a(13) =15285646a(14) =64947866a(15) =277884512a(16) =1197339560a(17) =5179481837a(18) =22524304974a(19) =98421284540a(20) =431715987739
External references
- oeis: A150035