158201

Properties

Appears in sequences

• Numbers k where the root mean square (RMS) of k and 7 is an integer, i.e., sqrt((k^2 + 7^2)/2) is an integer.at n=18A076293
• Chen primes p such that p + 2 is triangular.at n=19A109504
• Part of the positive proper solutions x of the Pell equation x^2 - 2*y^2 = - 7^2 based on the fundamental solution (x0, y0)= (1, 5).at n=6A254758
• Centered 25-gonal primes.at n=27A276264
• Prime numbersat n=14535