20043

Appears in sequences

• Integers that are Rhonda numbers to base 16.at n=5A100975
• Least number k such that the determinant of the circulant matrix formed by its decimal digits is equal to k/n.at n=16A323485
• Expansion of e.g.f. 1/(2 - x^2 - exp(x)).at n=6A346269
• Number of achiral triangular polyominoes with 6n cells and sixfold rotational symmetry.at n=21A364684