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), (1, 0, 0), (1, 1, 1)}.
A151151
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), (1, 0, 0), (1, 1, 1)}.
Terms
- a(0) =1a(1) =3a(2) =11a(3) =47a(4) =205a(5) =927a(6) =4273a(7) =19921a(8) =93761a(9) =444517a(10) =2118833a(11) =10146089a(12) =48764565a(13) =235101077a(14) =1136445415a(15) =5505870237a(16) =26727374589a(17) =129968044895a(18) =632964986425
External references
- oeis: A151151