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), (0, 0, 1), (0, 1, -1), (1, 0, 0), (1, 0, 1)}.
A151089
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), (0, 0, 1), (0, 1, -1), (1, 0, 0), (1, 0, 1)}.
Terms
- a(0) =1a(1) =3a(2) =11a(3) =42a(4) =173a(5) =741a(6) =3261a(7) =14629a(8) =66672a(9) =307495a(10) =1431450a(11) =6715136a(12) =31703007a(13) =150464688a(14) =717305665a(15) =3432702614a(16) =16481592146a(17) =79360476348a(18) =383088631773
External references
- oeis: A151089