406416

Appears in sequences

• Number of 2n-bead balanced binary strings, rotationally equivalent to reverse, inequivalent to complement and reversed complement.at n=16A045658
• G.f.: sqrt(1/agm(1, 1-8*x)) = sqrt(o.g.f. for A081085).at n=8A089603
• 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, -1, 1), (1, 0, 1), (1, 1, -1)}.at n=11A148975
• Number of (n+2) X (2+2) 0..2 arrays with no increasing sequence of length 3 vertically, diagonally downwards or antidiagonally downwards.at n=0A234375
• T(n,k) = number of (n+2) X (k+2) 0..2 arrays with no increasing sequence of length 3 vertically, diagonally downwards or antidiagonally downwards.at n=1A234380
• Number of (1+2) X (n+2) 0..2 arrays with no increasing sequence of length 3 vertically, diagonally downwards or antidiagonally downwards.at n=1A234381