78410

Appears in sequences

• Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 56.at n=9A031734
• Hypotenuses of special Pythagorean triples constructed from twin primes as follows: {u, w}={p,p+2}; side a=2p(p+2), side b=(p+2)^2-p^2 and the terms of sequence are values of c=a(n)=p^2+(p+2)^2=phi(a/2)+1+sigma(a/2)+1.at n=14A063533
• a(n) = 100*n^2 + 10.at n=28A158492