199080

Appears in sequences

• Even legs of Pythagorean triangles whose other leg and hypotenuse are both prime.at n=23A067755
• Number of n X 7 0..1 arrays avoiding 0 0 0 and 1 1 1 horizontally and 0 0 1 and 1 0 1 vertically.at n=10A208378
• (Denominators of Cauchy numbers of the second kind hat c_{2n})/6.at n=38A222561
• Expansion of e.g.f. exp( (x / (1-x))^3 ) / (1-x).at n=7A361595