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, -1, 1), (1, 1, 0)}.
A150590
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, -1, 1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =26a(4) =115a(5) =477a(6) =2191a(7) =9664a(8) =45300a(9) =206024a(10) =979711a(11) =4544013a(12) =21795972a(13) =102478516a(14) =494447089a(15) =2347304323a(16) =11377076227a(17) =54403898369a(18) =264615211162
External references
- oeis: A150590