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, 1), (-1, 1, 1), (1, -1, 0), (1, 0, -1), (1, 1, 0)}.
A149481
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, 1), (-1, 1, 1), (1, -1, 0), (1, 0, -1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =13a(4) =58a(5) =223a(6) =1035a(7) =4385a(8) =20837a(9) =92832a(10) =447686a(11) =2056408a(12) =10011840a(13) =46924966a(14) =229928748a(15) =1092889534a(16) =5379243634a(17) =25829380711a(18) =127549443682a(19) =617106718099
External references
- oeis: A149481