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), (-1, 1, -1), (1, -1, 0), (1, 0, 1), (1, 1, 0)}.
A150417
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), (-1, 1, -1), (1, -1, 0), (1, 0, 1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =24a(4) =95a(5) =377a(6) =1586a(7) =6706a(8) =29299a(9) =128291a(10) =574424a(11) =2573433a(12) =11715124a(13) =53352034a(14) =245809320a(15) =1133194148a(16) =5269541980a(17) =24520813745a(18) =114872653433a(19) =538496175196
External references
- oeis: A150417