127161

Appears in sequences

• Numbers k such that k and k^2 use only the digits 1, 2, 6, 7 and 9.at n=19A137015
• Number of (n+2)X3 binary arrays avoiding patterns 001 and 010 in rows, columns and nw-to-se diagonals.at n=7A202891
• T(n,k)=Number of (n+2)X(k+2) binary arrays avoiding patterns 001 and 010 in rows, columns and nw-to-se diagonals.at n=28A202898