47487

Appears in sequences

• Numbers k such that sigma(k) = sigma(k+8).at n=36A015876
• Expansion of 1/((1-2x)(1-5x)(1-7x)(1-9x)).at n=4A025993
• Number of n X n 0..1 arrays with every element equal to 0, 1, 3, 4 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.at n=5A300882
• Number of nX6 0..1 arrays with every element equal to 0, 1, 3, 4 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.at n=5A300886
• T(n,k)=Number of nXk 0..1 arrays with every element equal to 0, 1, 3, 4 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.at n=60A300888