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), (0, 0, 1), (1, 0, -1), (1, 1, 1)}.
A150794
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), (0, 0, 1), (1, 0, -1), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =31a(4) =130a(5) =562a(6) =2499a(7) =11273a(8) =51570a(9) =238304a(10) =1110437a(11) =5208089a(12) =24564106a(13) =116407697a(14) =553867430a(15) =2644404622a(16) =12664014094a(17) =60810286265a(18) =292688347154
External references
- oeis: A150794