486925

Appears in sequences

• Number of columns in all directed column-convex polyominoes of area n+1.at n=12A038731
• Row sums of triangle A134511.at n=24A134512
• The number of 2 X 2 matrices with all eigenvalues real and whose entries are integers with absolute value at most n.at n=13A219736
• Number of nX2 0..1 arrays with no element equal to more than two of its horizontal, vertical and antidiagonal neighbors and with new values introduced in order 0 sequentially upwards.at n=12A280598
• p-INVERT of (0,1,0,1,0,1,...), where p(S) = 1 - S - S^2 + S^3.at n=24A291241