23727

Appears in sequences

• Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 28.at n=10A031706
• Sum of smallest parts (counted with multiplicity) of all partitions of n.at n=28A092309
• Indices of primes in sequence defined by A(0) = 61, A(n) = 10*A(n-1) + 41 for n > 0.at n=19A101531
• Diagonal sums of a triangle based on the Catalan numbers.at n=10A110490
• a(n) = 121*n^2 + 11.at n=14A158536
• Numbers that are the product of 3 distinct primes a,b and c, such that a+b+c, a^2+b^2+c^2 and a^3+b^3+c^3 are prime numbers.at n=25A176911
• a(n) = floor(1/{(10+n^4)^(1/4)}), where {}=fractional part.at n=38A184634
• Numbers n such that phi(n) divides Sum_{k=1..n} phi(k).at n=44A194855