215325

Appears in sequences

• Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 32.at n=28A031710
• a(n) = T(n)^2 - n^2, where T(n) is a triangular number.at n=30A085740
• a(n) = 841*n^2 + 29.at n=16A158665
• Numbers k such that k+1 is a divisor of 3^k + 5^k.at n=10A234536
• Let s denote the sum of the abundant numbers in the aliquot parts of x. Sequence lists numbers x such that sigma(s) = usigma(x), where usigma(x) is the sum of the unitary divisors of x (A034448).at n=29A258135