487344

Appears in sequences

• Catapolyoctagons (see Cyvin et al. for precise definition).at n=10A121102
• The general form of the recurrences are the a(j), b(j) and n(j) solutions of the 2 equations problem: 5*n(j)+1 = a(j)*a(j) and 7*n(j)+1 = b(j)*b(j) with positive integer numbers.at n=3A159681
• Number of ways to choose three points in an (n X n)-grid (or geoplane).at n=11A178208
• Number of 3-step self-avoiding walks on an n X n X n cube summed over all starting positions.at n=25A187164
• Quarter-square tetrahedrals: a(n) = k*(k - 1)*(k - 2)/6, k = A002620(n).at n=24A217482