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, 0, 0), (0, -1, 1), (0, 0, 1), (1, 0, -1), (1, 1, 0)}.
A150601
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, 0, 0), (0, -1, 1), (0, 0, 1), (1, 0, -1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =27a(4) =110a(5) =468a(6) =2054a(7) =9190a(8) =41772a(9) =192237a(10) =893133a(11) =4182486a(12) =19714258a(13) =93429325a(14) =444835299a(15) =2126344430a(16) =10198950881a(17) =49065491000a(18) =236665988835
External references
- oeis: A150601