54765

Appears in sequences

• Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 52.at n=8A031730
• a(n) = 81*n^2 + 9.at n=25A157888
• a(n) is least number > 0 such that the concatenation of a(1) ... a(n) is 13-gonal: (11n^2 - 9n)/2.at n=3A264842
• Numbers k such that (298*10^k - 7)/3 is prime.at n=25A288484