19325

Appears in sequences

• Convolution of A000201 with itself.at n=34A023663
• Values of e, the lesser key or generating number for Pythagorean triangles in which S (the odd short leg) and U (the hypotenuse) are twin primes.at n=40A051892
• a(n) = prime(1)^2 + prime(n)^2.at n=33A287922
• Numbers k such that A073837(k) is a multiple of k.at n=18A341280
• a(1) = 1; if a(n) is not divisible by 3, a(n+1) = 4*a(n) + 1, otherwise a(n+1) = a(n)/3.at n=23A346035
• Squared length of diagonal of right trapezoid with three consecutive prime length sides.at n=33A360790
• Number of vertices formed when n equally spaced points are placed around a circle and all pairs of points are joined by an interior arc whose radius equals the circle's radius.at n=24A371254