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, 1), (0, 1, -1), (0, 1, 1), (1, 0, 1)}.
A150562
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, 1), (0, 1, -1), (0, 1, 1), (1, 0, 1)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =26a(4) =107a(5) =435a(6) =1864a(7) =8017a(8) =35094a(9) =154374a(10) =687651a(11) =3070614a(12) =13814330a(13) =62358004a(14) =282812259a(15) =1285949237a(16) =5868965797a(17) =26844046407a(18) =123111756347a(19) =565732128917
External references
- oeis: A150562