345216

Appears in sequences

• Sixth column (m=5) of (1,4)-Pascal triangle A095666.at n=28A095668
• Number of n X 4 nonnegative integer arrays with upper left 0 and lower right n+4-4 and value increasing by 0 or 1 with every step right or down.at n=11A252872
• Number of unoriented polyomino rings of length 4n with fourfold rotational symmetry.at n=20A324407