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, 0), (0, 0, -1), (0, 1, 0), (1, 0, 1)}.
A150237
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, 0), (0, 0, -1), (0, 1, 0), (1, 0, 1)}.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =22a(4) =83a(5) =319a(6) =1290a(7) =5347a(8) =22406a(9) =95151a(10) =410219a(11) =1784533a(12) =7813236a(13) =34466618a(14) =153083361a(15) =683137112a(16) =3061675811a(17) =13783972184a(18) =62292859805a(19) =282377271190
External references
- oeis: A150237