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, 0, 0), (-1, 1, 1), (0, 0, -1), (1, 0, 1)}.
A149242
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, 0, 0), (-1, 1, 1), (0, 0, -1), (1, 0, 1)}.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =11a(4) =36a(5) =125a(6) =453a(7) =1643a(8) =6160a(9) =23581a(10) =90833a(11) =353457a(12) =1396858a(13) =5547947a(14) =22161694a(15) =89279443a(16) =361655958a(17) =1470244295a(18) =6007452039a(19) =24661753493a(20) =101534196798a(21) =419402648339
External references
- oeis: A149242