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, 1), (0, 1, 1), (1, -1, -1)}.
A148262
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, 1), (0, 1, 1), (1, -1, -1)}.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =4a(4) =14a(5) =33a(6) =111a(7) =323a(8) =1130a(9) =3510a(10) =12650a(11) =42189a(12) =153329a(13) =534088a(14) =1979708a(15) =7077875a(16) =26653184a(17) =97361569a(18) =371357373a(19) =1378970170a(20) =5319484190a(21) =20026869205a(22) =77947197352a(23) =297045142864
External references
- oeis: A148262