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), (0, 1, -1), (0, 1, 0), (1, 0, 0), (1, 0, 1)}.
A151074
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), (0, 1, -1), (0, 1, 0), (1, 0, 0), (1, 0, 1)}.
Terms
- a(0) =1a(1) =3a(2) =10a(3) =40a(4) =169a(5) =723a(6) =3214a(7) =14570a(8) =66467a(9) =307797a(10) =1438868a(11) =6752762a(12) =31934236a(13) =151832097a(14) =723820039a(15) =3466177340a(16) =16655030010a(17) =80181728016a(18) =387141121436
External references
- oeis: A151074