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), (1, 0, -1), (1, 0, 1)}.
A149294
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), (1, 0, -1), (1, 0, 1)}.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =11a(4) =46a(5) =149a(6) =659a(7) =2359a(8) =10786a(9) =40881a(10) =190323a(11) =748193a(12) =3527018a(13) =14249557a(14) =67783120a(15) =279469503a(16) =1338252962a(17) =5605159863a(18) =26979650007a(19) =114453030191a(20) =553174729286
External references
- oeis: A149294