222784

Appears in sequences

• Least square k^2 > n^2 whose decimal expansion ends in n^2.at n=28A090292
• Numbers n for which the absolute value of the abundance of both n and n^2 is a prime number.at n=30A125237
• Numbers n for which the absolute values of the abundances of n, n^2 and n^3 are all prime numbers.at n=2A125249
• Numbers with 21 divisors.at n=23A137484
• Numbers with prime factorization p^2*q^6.at n=23A189990
• Number of nX3 0..1 arrays with every row and column least squares fitting to a zero slope straight line, with a single point array taken as having zero slope.at n=12A222956
• Squares representable as b! + triangular(c).at n=36A230365
• Least sum s of consecutive prime numbers starting with prime(n) such that s is a perfect square.at n=27A287027
• Primitive coreful Zumkeller numbers: coreful Zumkeller numbers (A339979) having no coreful Zumkeller aliquot divisor.at n=21A339981