685584
domain: N
Appears in sequences
- Numbers k such that the numerator of Sum_{d|k} 1/d > 3*k.at n=28A069096
- Square associated with twin primes (p,p+2): p(p+2) + 1. Square of the average of twin primes.at n=32A075369
- Squares in A145768 (XOR of squares of the numbers 1...n).at n=22A145828
- Numbers with prime factorization p^2*q^4*r^4 where p, q, and r are distinct primes.at n=10A190471
- Number of n X 4 0..1 arrays avoiding 0 0 1 and 0 1 1 horizontally and 0 0 1 and 1 0 1 vertically.at n=22A208138
- Squares equal to the difference between two successive primes of the form n^2+1.at n=26A216330
- Squares of the form x^3 + 2*y^3, with x, y > 0.at n=11A219728
- Number of (n+2) X (6+2) 0..1 arrays with no 3 x 3 subblock diagonal sum less than the antidiagonal sum or central row sum less than the central column sum.at n=24A258892
- Perfect powers k (exponent greater than 1) such that k-1 and k+1 are both semiprime.at n=15A276564
- Numbers k such that sigma(k) - 3k is prime.at n=12A306492
- Squares whose arithmetic mean of digits is 6 (i.e., the sum of digits is 6 times the number of digits).at n=21A316486
- Squares in A378769.at n=17A378984