41628

Appears in sequences

• Numbers m such that 3*2^m - 1 is prime.at n=37A002235
• Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 34.at n=11A031712
• Numbers which are the sum of their proper divisors containing the digit 8.at n=27A059467
• a(n) = 144*n^2 + 12.at n=17A158546
• Numbers n such that n | A067439(n).at n=13A237877
• Fundamental discriminants d uniquely characterizing all complex biquadratic fields Q(sqrt(-3),sqrt(d)) which have 3-class group of type (3,3) and second 3-class group isomorphic to SmallGroup(729,34).at n=22A250241
• Numbers k such that k divides A340740(k).at n=11A342503
• Numbers k such that (k*2^d - 1)*(d*2^k - 1) is semiprime for some divisor d of k.at n=49A382646